Makes ol margin big enough for 3 digits.
Fixes#7960

See merge request !2608
Highlight note code and edit preview
More highlighting fixes! Highlighting wasn't applied all the way for
code in notes, diff notes diffs and diff preview (on the file edit page).
The CSS changes further unify the styling for file-content highlighting,
diff highlighting and note code highlighting.
See merge request !2594
All inputs of type `search` will have the gray background
and search icon centered.
Because the search magnifier is a bg image,
I had to hide it with `[value=""]`.
I added a little javascript to make sure each input always has it's
own value.
Fix alignment issues after a fix on titles weight
Fixes#8102. Fixes#3956. This fixes an alignment regression introduced by !2422. Sorry about that! :/
## Commit title alignment fixed

**The fact that the first row has a smaller height than the other rows was not introduced by !2422 (I've checked by reverting 818607f0 on `master`).**
## Tags name in list

See merge request !2431
LDAP Sync blocked user edgecases
Allow GitLab admins to block otherwise valid GitLab LDAP users
(https://gitlab.com/gitlab-org/gitlab-ce/issues/3462)
Based on the discussion on the original issue, we are going to differentiate "normal" block operations to the ldap automatic ones in order to make some decisions when its one or the other.
Expected behavior:
- [x] "ldap_blocked" users respond to both `blocked?` and `ldap_blocked?`
- [x] "ldap_blocked" users can't be unblocked by the Admin UI
- [x] "ldap_blocked" users can't be unblocked by the API
- [x] Block operations that are originated from LDAP synchronization will flag user as "ldap_blocked"
- [x] Only "ldap_blocked" users will be automatically unblocked by LDAP synchronization
- [x] When LDAP identity is removed, we should convert `ldap_blocked` into `blocked`
Mockup for the Admin UI with both "ldap_blocked" and normal "blocked" users:

There will be another MR for the EE version.
See merge request !2242