Updated Bootbox to 4.3.0.
Merge pull request #1711 from xiaohutai/remove-extensions-folder

Remove extensions folder.
Show readme for extensions. Fixes #1617
Fixes #1670. Add function that gets all assets added by extensions.
Merge pull request #1712 from xiaohutai/issue-1670

Fixes #1670. Add function that gets all assets added by extensions.
Combining "extend" and "extensions" menus into one "Extra's" menu. Working on #1694
Tidying up the "pre fill" page. Fixes #1593
Making "select all" and "select none" more consistent.
Tweaking CSS
Tweaking the CSS of the tabs.
Slightly improving makeslug. Fixes #1234
no beta
Update extend.twig

Add extend-bolt-container class to alert div.
Merge pull request #1718 from mavken/master

Update extend.twig
Update extend.twig

Add col-xs-12 class and div wrapper to fix alert display.
Merge pull request #1719 from mavken/master

Update extend.twig
Slightly wider table-cell for edit contenttype action-btn

Localized bolts will otherwise wrap the button-addon selector to a new line

SASS --sourcemap flag is deprecated
Bugfix
delegated config loading to the extension allowing more control over response to developers
fix to variable name
init composer as array