Fixed bugs tables editing

[anzin]

Description (*)

I've fixed the bugs: if you edit table cell and click on the OK button without clicking previously on another table cell or JComponent, the value won't be saved to the table model and generation won't know about it.

Solution:
Added check if the table is editing after clicking the button ok, if yes stop editing.

Result:

Contribution checklist (*)

• Pull request has a meaningful description of its purpose
• All commits are accompanied by meaningful commit messages
• All new or changed code is covered with integration/functional tests (if applicable)
• All automated tests passed successfully (all builds are green)