Branched for issue #255: Translation for menus in core
Menu multilingual
Corrected tabs and removed comments, tryout code
Bugfix in conditions to select links in multilingual mode.
Issue #189: Porting Admin Menu to Backdrop. Removing Toolbar.
Added base for multilingual with translations
Updated some descriptions in edit forms
Added language column to link items overview
Added multilingual with translations support for menus.
Issue #189: Include top-level tabs as children in admin menu.
Issue #217: Convert contact module variables to cmi
Merging with 1.x
Issue #1820086 by gcassie: Remove mention of drupal_session_count() from inline documentation.
Issue #1683794 by somepal, JacobSanford, Caligan: User action "block user" docblock correction.
Issue #1815886 by bojanz, slashrsm | torgosPizza: Drupal core cannot manage files larger than 4 GB.
Issue #2056363 by yched, Sweetchuck, chx: INSERT INTO table SELECT * FROM ... not supported.
Issue #1679660 by rhm50, amontero, billk2, valthebald | bagvendt: Add link to cron tutorial on drupal.org.
Issue #1414368 by coolestdude1, Dave Reid: Drupal_http_request does not handle basic auth correctly when dealing with blank passwords.
Issue #310315 by superspring, justafish, naxoc, Waltemath | fonant: drupal_wrap_mail() strips trailing blanks from standard hyphen-hyphen-space-newline e-mail signature separator.
Issue #2040209 by WebEvt: CSS is truncated when aggregation is turned on.
Issue #1996644 by apkwilson, abghosh82 | joachim: User_login_name_validate() uses isset() where other user login form validation handlers use !empty().
Issue #2079315 by mondrake: Image style editing leads to redundant watchdog entries.