[MOV] content/*: move resource files into their related page's directory

Since #903, the guideline for the location of new
resource (images, downloadable files, RST includes...) files is to place
those inside the directory of the RST page that references them.

For example, if `doc1.rst` has a reference to `image.png` and to
`download.zip`, the file structure should look like this:

├── parent_doc/
│     └── doc1/
│     │     └── image.png
│     │     └── download.zip
│     └── doc1.rst
│     └── doc2.rst
├── parent_doc.rst

Before this commit, most of the resource files were still located inside
'media' directories holding all the resource files referenced by RST
pages located at the same level as these directories. In the example
above, a single 'media' directory would hold all the resource files
referenced by both `doc1.rst` and `doc2.rst`. Doing so prevented us from
figuring out easily which resource file was referenced by which RST page
and, thus, lead to unused resource files piling up in the repository. It
also made it more complicated to define codeowners regex rules because a
team could not simply be assigned to `/some_page.*` but needed to be
assigned to both `/some_page\.rst` and to the location of 'media'.

In order to help new content writers figure out the guideline when
taking examples from other RST pages, this commit retroactively applies
the guideline to existing resource files and 'media' directories. The
left-over resource files that are not referenced by any RST page are
removed.

task-2497965

Part-of: #2026

Author: AntoineVDV

content/administration/odoo_sh/advanced/containers.rst

@@ -232,6 +232,6 @@ Save the file and then run the Odoo Shell:
 Finally, *via* the Odoo Shell, you can trigger the piece of code/function/method
 you want to debug.
 
-.. image:: ./media/pdb_sh.png
+.. image:: containers/pdb_sh.png
     :align: center
     :alt: Console screenshot showing ``pdb`` running in an Odoo.sh shell.

content/administration/odoo_sh/advanced/media/pdb_sh.png renamed to content/administration/odoo_sh/advanced/containers/pdb_sh.png

@@ -44,7 +44,7 @@ On Odoo.sh, in the branches view of your project, choose the branch in which you
 
 In the upper right corner, click on the *Submodule* button, and then on *Run*.
 
-.. image:: ./media/advanced-submodules-button.png
+.. image:: submodules/advanced-submodules-button.png
    :align: center
 
 A dialog with a form is shown. Fill the inputs as follows:
@@ -53,12 +53,12 @@ A dialog with a form is shown. Fill the inputs as follows:
 * Branch: The branch you want to use.
 * Path: The folder in which you want to add this submodule in your branch.
 
-.. image:: ./media/advanced-submodules-dialog.png
+.. image:: submodules/advanced-submodules-dialog.png
    :align: center
 
 On Github, you can get the repository URL with the *Clone or download* button of the repository. Make sure to *use SSH*.
 
-.. image:: ./media/advanced-submodules-github-sshurl.png
+.. image:: submodules/advanced-submodules-github-sshurl.png
   :align: center
 
 .. _odoosh-advanced-submodules-withgit:

content/administration/odoo_sh/advanced/submodules.rst

@@ -8,7 +8,7 @@ Overview
 
 The branches view gives you an overview of the different branches your repository has.
 
-.. image:: ./media/interface-branches.png
+.. image:: branches/interface-branches.png
    :align: center
 
 .. _odoosh-gettingstarted-branches-stages:
@@ -20,7 +20,7 @@ Odoo.sh offers three different stages for your branches: production, staging and
 
 You can change the stage of a branch by drag and dropping it into the stage section title.
 
-.. image:: ./media/interface-branches-stagechange.png
+.. image:: branches/interface-branches-stagechange.png
    :align: center
 
 .. _stage_production:
@@ -109,7 +109,7 @@ Merging your branches
 ---------------------
 You can merge your branches easily by drag and dropping them into each other.
 
-.. image:: ./media/interface-branches-merge.png
+.. image:: branches/interface-branches-merge.png
    :align: center
 
 When you want to test the changes of your development branches with the production data,
@@ -156,7 +156,7 @@ An overview of your branch history:
 * The messages of the commits and their authors,
 * The various events linked to the platform, such as stage changes, database imports, backup restores.
 
-.. image:: ./media/interface-branches-history.png
+.. image:: branches/interface-branches-history.png
    :align: center
 
 For each event, a status is displayed in the top right-hand corner.
@@ -172,7 +172,7 @@ This tab contains the mail catcher. It displays an overview of the emails sent b
 The mail catcher is available for your development and
 staging branches as the emails of your production database are really sent instead of being intercepted.
 
-.. image:: ./media/interface-branches-mails.png
+.. image:: branches/interface-branches-mails.png
    :align: center
    :scale: 50%
 
@@ -181,7 +181,7 @@ Shell
 A shell access to your container. You can perform basic linux commands (:code:`ls`, :code:`top`)
 and open a shell on your database by typing :code:`psql`.
 
-.. image:: ./media/interface-branches-shell.png
+.. image:: branches/interface-branches-shell.png
    :align: center
 
 You can open multiple tabs and drag-and-drop them to arrange the layout as you wish,
@@ -197,7 +197,7 @@ Editor
 An online integrated development environment (IDE) to edit the source code.
 You can also open terminals, Python consoles and even Odoo Shell consoles.
 
-.. image:: ./media/interface-branches-editor.png
+.. image:: branches/interface-branches-editor.png
    :align: center
 
 You can open multiple tabs and drag-and-drop them to arrange the layout as you wish,
@@ -207,7 +207,7 @@ Monitoring
 ----------
 This link contains various monitoring metrics of the current build.
 
-.. image:: ./media/interface-branches-monitoring.png
+.. image:: branches/interface-branches-monitoring.png
    :align: center
 
 You can zoom, change the time range or select a specific metric on each graph.
@@ -219,7 +219,7 @@ Logs
 ----
 A viewer to have a look to your server logs.
 
-.. image:: ./media/interface-branches-logs.png
+.. image:: branches/interface-branches-logs.png
    :align: center
 
 Different logs are available:
@@ -243,7 +243,7 @@ Backups
 A list of the backups available for download and restore, the ability to perform a manual backup and to import a
 database.
 
-.. image:: ./media/interface-branches-backups.png
+.. image:: branches/interface-branches-backups.png
    :align: center
 
 Odoo.sh makes daily backups of the production database. It keeps 7 daily, 4 weekly and 3 monthly backups.
@@ -285,7 +285,7 @@ Settings
 --------
 Here you can find a couple of settings that only apply to the currently selected branch.
 
-.. image:: ./media/interface-branches-settings.jpg
+.. image:: branches/interface-branches-settings.jpg
    :align: center
 
 **Behaviour upon new commit**
@@ -302,7 +302,7 @@ back from staging to development will automatically be set to 'Do nothing'.
 
 Choose the modules to install automatically for your development builds.
 
-.. image:: ./media/interface-settings-modulesinstallation.png
+.. image:: branches/interface-settings-modulesinstallation.png
    :align: center
 
 * *Install only my modules* will install the modules of the branch only. This is the default option.
@@ -397,7 +397,7 @@ Shell commands
 ==============
 In the top right-hand corner of the view, different shell commands are available.
 
-.. image:: ./media/interface-branches-shellcommands.png
+.. image:: branches/interface-branches-shellcommands.png
    :align: center
 
 Each command can be copied in the clipboard to be used in a terminal,
@@ -466,12 +466,12 @@ To do so, follow these steps:
    (only apply the step 1)
 #. Paste the copied content to your profile SSH keys and press "Add"
 
-   .. image:: ./media/SSH-key-pasting.png
+   .. image:: branches/SSH-key-pasting.png
       :align: center
 
 #. The key should appear below
 
-   .. image:: ./media/SSH-key-appearing.png
+   .. image:: branches/SSH-key-appearing.png
       :align: center
 
 Connection
@@ -485,7 +485,7 @@ To connect to your builds using ssh use the following command in a terminal:
 
 You will find a shortcut for this command into the SSH tab in the upper right corner.
 
-.. image:: ./media/SSH-panel.png
+.. image:: branches/SSH-panel.png
    :align: center
 
 Provided you have the :ref:`correct access rights <odoosh-gettingstarted-settings-collaborators>` on the project,