On some setups, IE v10 on Windows 7 at least, text added to the Redactor
editor after an image is inserted (via the image popup dialog for instance),
will not be retrieved via the ::get() method and so will not be submitted
with the form submit button.

This patch introduces a workaround by manually calling ::sync() for the
Redactor when the submit button is pressed — just before the form is
submitted.

Also add a drop-down list of common links include ticket links and login
pages for both agents and end users.

And add translations for the draft mechanism

Also, default size should not decrease if different signatures are selected

Previously the richtext editor introduced the loss of the collision
avoidance feature.

  * Upgrade to Redactor 9.1.7
  * Use a (x) icon from font-awesome for the dialog

Previously, deleting a draft either from a form [reset] button or from the
trashcan would delete the draft and cancel the draft system for the
remainder of the page's lifetime. This patch deletes the current draft and
resets the Redactor's content, but then it starts a new draft cycle so
drafts can be continued. It also prevents posting to an undefined URL if the
draft_id has not yet been setup.

Fixes #90

Fixes #65

If the [reset] button refreshes the page, ensure the draft deletion is
completed before the refresh is performed or the draft deletion will be
canceled.

The issue has been filed with Imperavi, but no ticket number or other
tracking information was returned.

Linebreaks mode will result in <Enter> key adding a <br/> element to the
HTML markup rather than starting a new paragraph <p> element.

This patch also changes the behavior of the <Tab> key to change focus away
from the Redactor editor rather than indenting the current block.