Merge branch '7.x-2.x' into 7.x-3.x
Issue #1653234 by sirjay, joel_osc, mrP: Fixed missing "Add menu block" link due to permission machine name error.
Issue #1937038: Use $max_depth parameter of menu_tree_all_data() and menu_tree_page_data()
Issue #1420180: Assign the panel panes for menu block blocks to the "Menus" category
Issue #907292: Add API to obtain raw menu data (not the render element)
Issue #1327472 by tim.plunkett, pjcdawkins and giginos: Child menu items don't appear when current page is front page
Issue #1327472: Child menu items don't appear when current page is front page
Issue #1698992: hook_uninstall assumes block module dependency
Issue #1594684: Menu block export ids may be too long, plus unquoted string
Issue #1872140: Missing contextual links when using "Menu selected by active page" option
Issue #1812824 by gabriel.achille: Incompatibility with modules like menu_position
Give feature parity to menu_block_tree_output() based on updates from core menu_tree_output().
Issue #1430668: Improve "Starting Level" description
Renamed menu-block-admin.css to menu-block.admin.css.
Issue #1526212: menu-block-admin.css contains broken CSS
Fix weight on basic/advanced option toggle.
Issue #1203646: Pane generates illegal choice error when editing
Issue #1909366: Menu block names get translated twice
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