chore(ci): Encrypted notification email

This is to avoid receiving notification from forks. See http://docs.travis-ci.com/user/encryption-keys/
Merge pull request #6877 from Srokap/notification_email

chore(ci): Encrypted notification email
fix(docs): Inline refs use @link instead of @see

Inline references in documentation should use {@link ...}
Merge pull request #6881 from Srokap/pr/6871

fix(docs): Inline refs use @link instead of @see
fix(aalborg_theme): inconsistency between owner-block and page menu
Merge pull request #6887 from PerJensen/aalborg_menu

fix(aalborg_theme): inconsistency between owner-block and page menu
Merge github.com:Elgg/Elgg into 1.9