Check user access during API calls

Mobile ui improvements

* Fixes blob view - https://twitter.com/jamesgecko/status/466675058664951808
* Hide project sidebar for xs
* Hide group activity for xs

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

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

If we do not set a private token during the test, current_user will be
nil because the user is not found, not due to the access check.

Block 'disabled' AD users over SSH

The existing SSH access check for LDAP users ignored the ActiveDirectory 'disabled' flag.

Check the bit for disabled Active Directory users. The filter is based
on http://ctogonewild.com/2009/09/03/bitmask-searches-in-ldap/ .

Correct a wrong spelling

"abolute" -> "absolute"

Update grit version

Pullreview

Add an example webhook receiver

fix ctrl+enter note send

use argument e instead of event

Gzip assets warning for relative urls

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

Green theme

Because we have 3 dark themes with similar colours. So it makes sense to replace one with something colourful. So why not green? :)

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

Improve jira linking

Ported from EE

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

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