i18n: Fix several untranslated texts and missing help tips
i18n: Use @trans to mark a bare string translatable

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".
Add translation context to ticket states

Add context to ticket state name (noun) and action (verbs)

Conflicts:

	include/class.forms.php
oops: Lint fixes
Merge pull request #1203 from protich/feature/i18n++

Add translation context to ticket states

Reviewed-By: Jared Hancock <jared@osticket.com>