This patch also makes a slight edit to mPDF to allow better detection of
substitions in characters, as the DejaVu fonts shipped do not support Thai
glyphs.

And allow for @context to add context to the bare string literal. For
instance,

    /* @trans, @context "noun" */ 'Open'

Would mark the string 'Open' translatable with context "noun".

And add translations for the draft mechanism

Also add some logic to the POT builder to warn about incorrect arguments to
the __() function and friends as well as warn about _() usage.

The software defines at least three contexts for the phrase "Open"

  * The name of a ticket queue (Open tickets)
  * A status of a ticket (Open / Closed)
  * An action to be performed (Open a ticket)

References:
(Crowdin login required)
http://i18n.osticket.com/translate/osticket-official/148/enus-de#2915

Also, the final version of the system will not require the `gettext`
extension for PHP

Also add several lint fixes for packaging

Also, write js and css links to be forcibly reloaded by the browser after
deployment

Instead of allowing the backend to send a redirect URL, which doesn't make
sense on the command line

Add CLI import/export support for organizations

Output headers on export

Implement CLI user import/export in a well formatted CSV file. Name and
email address are the only supported fields at the moment.