Moved the templates into a subfolder to later break them down into smaller pieces.
Moved template, JS and CSS files to separate folders

While some files have been split, like the feedback-form.tpl.php file,
the logic remains the same, no significant changes have been made. The
only exception is that the rtl.css file has been deleted, because it
is outdated and has been replaced earlier by what is now css/writing-helper-rtl.css
Fixed the meta box display for the single column interface.
Split the meta box template code into three parts to make it more manageable.
Moved the feedback table code into a separate partial

This is done to later use the table code separately without
its wrapping elements.
Changed the feedback helper displaying logic

Before if some feedback or even some shared links were present
for the post, the feedback helper was being shown even if the post
was already in the published state. This exposed the controls to the user
but they were unusable. Now the controls display logic is handled separately
and the feedback is shown without them if the post is published.