Add fix for mobile gh fork button

Author: tony

doc/_static/libtmux.css

@@ -0,0 +1,9 @@
+div#changelog > div.section > ul > li > p:only-child {
+    margin-bottom: 0;
+}
+
+@media screen and (max-width: 768px) {
+    #fork-gh img {
+        display: none;
+    }
+}

doc/_templates/layout.html

@@ -2,4 +2,4 @@
 {% extends "!layout.html" %}
 
 {# Include our new CSS file into existing ones. #}
-{% set css_files = css_files + ['_static/tmuxp.css']%}
+{% set css_files = css_files + ['_static/libtmux.css']%}

doc/_templates/page.html

@@ -1,7 +1,7 @@
 {% extends "!page.html" %}
 {% block footer -%}
 {{ super() }}
-<a href="https://github.com/tony/libtmux">
+<a href="https://github.com/tony/libtmux" id="fork-gh">
   <img style="position: absolute; top: 0; right: 0; border: 0;"
   src="https://s3.amazonaws.com/github/ribbons/forkme_right_darkblue_121621.png"
   alt="Fork me on GitHub">

doc/conf.py

@@ -56,6 +56,7 @@
         html_theme = 'pyramid'
 
 html_theme_path = ['_themes']
+html_static_path = ['_static']
 
 htmlhelp_basename = '%sdoc' % about['__title__']