Added keyboard shortcuts. @todo map to keys defined by Gmail or other popular provider for user convenience.

Fixed bug in remove Labels that are IMAP protocol defined Flags

Removed navigation widget that was in app\mail\view\widget\navigation\. This would cause bugs in importing from Git as this was removed locally in dev and not updated to Git.

Adde widget\documentHead which is attached to Factory::getDocument()->head and allows adding of CSS and JS to HTML <head> of current page.
Removed unused files in app/mail/*

Added "Save Draft" to the modal email compose

Fixed bug in pagination tooltip in "Older Messages" overflowing out of page and making it hard to click btn.
Updated install/readme.txt

Deleted unnecessay files.
Some code cleanup