* Add new Elephant Friend images. Use them in ListsActivity.
* Add error images to AccountListFragment
* Add error images to Timeline & Notifications fragment. Needs rework.
* Introduce BackgroundMessageView. Use it in AccountList.
* Use correct button style for BackgroundMessageView
Co-Authored-By: charlag <charlag@tutanota.com>
* Use BackgroundMessageView
* Add BackgroundMessageView docs
* Re-color and document elephants
* Apply feedback, disable refresh when error is shown
* Fix string typo
* upgrade to AndroidX, upgrade libraries
* move to MaterialComponents theme
* make sure the compose button looks good everywhere
* fix tollbar title/button alignment on tablet
* move to new material color theming, consolidate colors and themes
* fix build, fix imports
* set error on TextInputLayout instead of EditText
* fix imports, TootButton when
* improve snackbar style
* fix task description color
* 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)