Merge branch 'master' into fixes/api, code clean up and tests fixed

Conflicts:
	doc/api/projects.md
	spec/requests/api/projects_spec.rb

doc/api/users.md

@@ -235,6 +235,23 @@ Parameters:
 + `key` (required) - new SSH key
 
 
+## Add SSH key for user
+
+Create new key owned by specified user. Available only for admin
+
+```
+POST /users/:id/keys
+```
+
+Parameters:
+
++ `id` (required) - id of specified user
++ `title` (required) - new SSH Key's title
++ `key` (required) - new SSH key
+
+Will return created key with status `201 Created` on success, or `404 Not
+found` on fail.
+
 ## Delete SSH key
 
 Deletes key owned by currently authenticated user. This is an idempotent function and calling it on a key that is already