Add highlightjs assets to vendor

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Include highlight.js assets

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Modify white and solarized themes for hljs

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Init highlgiht js and render for blob. Improve css for it

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Improve themes. Load highlight.js properly

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Add highlight.js support to markdown, snippets etc

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Fix blob multiline highlight

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Fix tests

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Improve highlight for notes

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>
Add instructions for backups using cron
 Merge branch 'backup_crontab' into 'master'

Backup Crontab
added group avatars
 Merge branch 'highlight-js' into 'master'

Highlight.Js

Replace pygments code highlight with client-side library - highlight.js

http://highlightjs.org/
Merge pull request #6178 from Popl7/add_group_avatars

added group avatars