* set minSdkVersion to 21
* use elevation instead of additional views for shadow
* clean up code occurrences
* remove drawable compat code
* remove no longer needed resources
* remove unneeded android:clipChildren="false"
* Revert "remove no longer needed resources"
This reverts commit 67a4d6f8d87b3f116b95d90dfb48f350d342f503.
* remove no longer needed resources (this time the right ones)
Mentions are also, incidentally, but still link to the account page for that user in the browser. This should be changed to an in-app account page when that's finished, but it's actually fairly suitable fallback behaviour for now.