fix handling of legacy database.sql multicolumn keys in dca extractor
Added sendNewsletter hook
Merge branch 'hotfix/3.2.14' into support/3.2
Merge branch 'hotfix/3.3.5'
Set the correct path to TCPDF in `system/config/tcpdf.php` (see #7264)
Correctly assign "col_first" and "col_last" in the image gallery (see #7250)
Fix the `Database::list_fields()` method (see #7277)
Updated the ACE editor to version 1.1.6 (see #7278)
Fix a bug currently occurring in Chrome 38 beta (see #7281)
Fix two issues with the ACE editor (see #7284)
Merge branch 'hotfix/3.2.15' into hotfix/3.3.6

Conflicts:
	assets/contao/js/core.js
	system/config/ace.php
	system/docs/CHANGELOG.md
	system/themes/default/main.css
Update the change log and the vendor libraries
Correctly mark CAPTCHA fields as mandatory (see #7283)
Merge branch 'hotfix/3.3.6' into develop

Conflicts:
	system/docs/CHANGELOG.md
Added the "link_name" insert tag (see #7218)
Fix the "link_target" insert tag
Add the `|async` flag to `$GLOBALS['TL_JAVASCRIPT']` (see #7172)
Add the class "tableless" to the `member_` templates (see #7207)
Handle `data-` and `ng-` attributes in `Widget::addAttributes()` (see #7095)
Merge pull request #7158 from aschempp/pullrequests/tl_files-readability