String update and file extension name consistency (#436)

* Fixes #434

* Fixes #433

* Prtially fixes #432

* Disable auto labelling of issues

* Use yaml instead of yml as recommended by yaml.org

* shortened the strings

* simplified option description

src/app/organisms/room/RoomSettings.jsx

@@ -123,7 +123,7 @@ function SecuritySettings({ roomId }) {
         <RoomEncryption roomId={roomId} />
       </div>
       <div className="room-settings__card">
-        <MenuHeader>Message history visibility (Who can read history)</MenuHeader>
+        <MenuHeader>Message history visibility</MenuHeader>
         <RoomHistoryVisibility roomId={roomId} />
       </div>
     </>

src/app/organisms/room/RoomViewContent.jsx

@@ -63,7 +63,7 @@ function genRoomIntro(mEvent, roomTimeline) {
       avatarSrc={avatarSrc}
       name={roomTimeline.room.name}
       heading={`Welcome to ${roomTimeline.room.name}`}
-      desc={`This is the beginning of ${roomTimeline.room.name} room.${typeof roomTopic !== 'undefined' ? (` Topic: ${roomTopic}`) : ''}`}
+      desc={`This is the beginning of the ${roomTimeline.room.name} room.${typeof roomTopic !== 'undefined' ? (` Topic: ${roomTopic}`) : ''}`}
       time={mEvent ? `Created at ${dateFormat(mEvent.getDate(), 'dd mmmm yyyy, hh:MM TT')}` : null}
     />
   );