* Replace all ctx.Handle with ctx.ServerError or ctx.NotFound

* Change Handle(403) to NotFound, avoid using macaron's NotFound

* Add 'mark all read' option to notifications

Signed-off-by: Sasha Varlamov <sasha@sashavarlamov.com>

* Fix exported comment

Signed-off-by: Sasha Varlamov <sasha@sashavarlamov.com>

* Format method comments

Signed-off-by: Sasha Varlamov <sasha@sashavarlamov.com>

* Fix exported comment

Signed-off-by: Sasha Varlamov <sasha@sashavarlamov.com>

Format method comments

Signed-off-by: Sasha Varlamov <sasha@sashavarlamov.com>

Tests for reactions (#3083)

* Unit tests for reactions

* Fix import order

Signed-off-by: Lauris Bukšis-Haberkorns <lauris@nix.lv>

Fix reaction possition when there is attachments (#3099)

Refactor notifications swap function

* Accept change to drop beforeupdate call

* Update purge notifications error message for consistency

* Drop unnecessary check for mark all as read button

* Remove debugging comment

* Unit tests and remove unused functions in models/notification

* Read -> Unread

* i18n button titles

* Improvements on notification page layout

* Notification count badge fixes

* Make table <tr> clickable

* Fix octicon aligment

* Fix use of AppSubUrl

* docs: update translation on notification page for zh-CN

* use international resources

* Use relative URLs

* Notifications - Mark as read/unread

* Feature of pinning a notification

* On view issue, do not mark as read a pinned notification