If the attachment view was visible, keep it that way.
The ScrollView around the WebView caused all sorts of problems. This change removes the ScrollView and uses the undocumented method WebView.setEmbeddedTitleBar() to set the MessageHeader view as "title bar" of the WebView. This allows MessageHeader to scroll away making more room for the WebView. All of the "magic title bar" code was originally implemented by Jesse for Kaiten. Because WebView doesn't support a scrolling footer we can no longer support scrolling buttons or attachments at the end of the message. Now users can switch from message view to attachment view via a button just below the message headers. I also copied some code for which I was too lazy to create a separate commit. It allows to display attachments we didn't use to show by clicking on a "More..." button in the attachment view. Those attachments are mostly images referenced by the HTML part (e.g. background images). Fixes issue 3291
added gmx.com. set delete policy to DELETE_POLICY_ON_DELETE for IMAP on automatic setup like manual setup does. set default names for Archive and Spam on manual config like automatic setup does.
This will automatically recreate the dialog on configuration changes (e.g. orientation change).
3945: Handling error when there's no File Manager application used in import settings
…cation in Android to handle import configurations.