Add read-only view (/s/note) (#563)

* Update Link classes to allow tooltips/titles

* Added read-only-view, Move note title extraction into separate file

(cherry picked from commit be23083ca3966f26b1b841d5cf4f21e299c8a55a)
(cherry picked from commit cbc595d3fc336b0a649c396dfae30fa08082384c)

* Optimized look of document-infobar

(cherry picked from commit 0176668b156da3fd7c534161a839ca0e3495119c)

# Conflicts:
#	src/components/editor/document-bar/document-info/document-info-time-line.tsx

* Show help-button only in Editor-variant of AppBar

(cherry picked from commit 3c26e1619c774fe162cb3d8fae9e79ced92c9c3e)

* Update CHANGELOG

(cherry picked from commit d0d29e7d408515cc8f86df45d13fff60d741873e)

* Move motd-banner to top of page

(cherry picked from commit 43a9a274bf5da3fdf640ec905ab38153c81b014b)

* Refactor isInline to size property

(cherry picked from commit cb4ee74b7c97ec9711946f28924e9c890b752ea3)

# Conflicts:
#	src/components/editor/document-bar/document-info/document-info-time-line.tsx

* Add size attribute to user-avatar

(cherry picked from commit 9629b58911b9d4f3aed81ef8c271fbc8e5a15aa4)

* Add mode-enum to app-bar

(cherry picked from commit 08f95be58974468c1e2897b475e5e3235b79c230)

* Split DocumentRenderPane into scrollable- and non-scrollable variant

(cherry picked from commit 44dd27edfd967745c548f7ae1fd2047e812cdc22)

* Removed unnecessary className

public/api/v2/notes/old

@@ -2,12 +2,11 @@
     "id": "ABC123",
     "alias": "old",
     "lastChange": {
-        "userId": "snskxnksnxksnxksnx",
-        "username": "testy",
-        "timestamp": 123456789
+        "userId": "test",
+        "timestamp": 1600033920
     },
     "viewcount": 0,
-    "createtime": "2020-05-22T20:46:08.962Z",
+    "createtime": 1600033920,
     "content": "test123",
     "authorship": [],
     "preVersionTwoNote": false