Hoping to shorten build time

Secret URL registration. Closes #1507

Update the flex-nav hidden element for RTL

Textarea theme fix for RTL

Improvements/performance

Hotfix/unread count scroll

Updated the name of the flex-nav element for RTL from `hidden` to the correct name `animated-hidden`

These changes alters the theme of the text-area and the upload button to look correct with RTL interface.

Permissions translation

Permissions renaming

attempt to speed up build

Various accessibility fixes