Disable youtube recommendations at end of video

Normally, the embedded youtube player will show recommended videos based
on the one played.
This isn't however desired if we want the reader to submerge into a
long, distraction-free reading/viewing experience, so we've disabled the
video recommendations for our projects. I even think this would make a
good default for AESOP.
Merge branch 'bug/chapter-code-showing' into release/1.3
Merge branch 'bug/gallery-used-in' into release/1.3
Merge branch 'bug/timeline-build-failing' into release/1.3
Merge branch 'bug/update-fitvids' into release/1.3
Merge branch 'bug/update-fotorama' into release/1.3

Conflicts:
	public/assets/js/ai-core.js.map
	public/assets/js/ai-core.min.js
Merge branch 'bug/update-imagesloaded' into release/1.3
Merge branch 'bug/update-scrollnav' into release/1.3
Merge branch 'bug/&nbsp;' into release/1.3
Merge branch 'bug/video-markup' into release/1.3

Conflicts:
	public/includes/components/component-video.php
recompile
Merge branch 'bug/markup-content' into release/1.3
Merge branch 'bug/sanitizations' into release/1.3

Conflicts:
	public/includes/components/component-heading.php
	public/includes/components/component-timeline.php
	public/includes/components/component-video.php
Merge branch 'feature/uicolors' into release/1.3
changelog
manually merge #152

props @peiche

- fixes editor js error if user has visual editor turned off in settings
uglify
fix chapter breaking from failed merge to release
add new sample theme link to md
Merge branch 'feature/maps' into release/1.3

Conflicts:
	admin/assets/css/aesop-admin.css
	admin/assets/less/source/variables.less