- by using normal buttons we get the native look&feel and space can activate
the buttons which is what users expect. Unfortunately it seems that the
buttons are currently hard-coded to a small font size; hopefully this will
be fixed in a future toolkit release
- remove the space hack from webview
- move the times into the ease buttons
- set a default button on a few screens
- fix a bug with clearing progress after an error
- add a separate toolbar for the deck browser
- add a message when there are no decks
- change the progress handler not to lock the UI immediately, which causes
flicker
- ensure the webview is focused after stdHtml()
