Expose hidden notification rules in UI

Adds UI control for 3 hidden notification rules:

* Messages containing @room
* Encrypted one-to-one messages
* Encrypted group messages

This should help to clarify some mysterious notification behavior, as it wasn't
obvious that these rules existed.

Fixes vector-im/riot-web#7833.

Signed-off-by: J. Ryan Stinnett <jryans@gmail.com>

src/components/views/settings/Notifications.js

@@ -483,8 +483,11 @@ module.exports = React.createClass({
                 // The default push rules displayed by Vector UI
                 '.m.rule.contains_display_name': 'vector',
                 '.m.rule.contains_user_name': 'vector',
+                '.m.rule.roomnotif': 'vector',
                 '.m.rule.room_one_to_one': 'vector',
+                '.m.rule.encrypted_room_one_to_one': 'vector',
                 '.m.rule.message': 'vector',
+                '.m.rule.encrypted': 'vector',
                 '.m.rule.invite_for_me': 'vector',
                 //'.m.rule.member_event': 'vector',
                 '.m.rule.call': 'vector',
@@ -534,9 +537,12 @@ module.exports = React.createClass({
             const vectorRuleIds = [
                 '.m.rule.contains_display_name',
                 '.m.rule.contains_user_name',
+                '.m.rule.roomnotif',
                 '_keywords',
                 '.m.rule.room_one_to_one',
+                '.m.rule.encrypted_room_one_to_one',
                 '.m.rule.message',
+                '.m.rule.encrypted',
                 '.m.rule.invite_for_me',
                 //'im.vector.rule.member_event',
                 '.m.rule.call',