4.512 changelog
Bumped manifest to 4.512
Updated Japanese translation. catch up with 58e7732.
Added detailed description for narrow devices
Updated Japanese translation of the changelog.
newly added a test testDecodeEncodedWords()
Avoid StringIndexOutOfBoundsException when the header is broken like "=?us-ascii?q?abc?= =?"
Added tests on JVM.
Fix type in settings string 'visisble'.
Merge pull request #389 from jca02266/tests-on-jvm

Added tests running on JVM.
Fetch attachments while MessageCompose activity is running

Android allows other apps to access protected content of an app without requesting the
necessary permission when the app returns an Intent with FLAG_GRANT_READ_URI_PERMISSION.
This regularly happens as a result of ACTION_GET_CONTENT, i.e. what we use to pick content
to be attached to a message. Accessing that content only works while the receiving activity
is running. Afterwards accessing the content throws a SecurityException because of the
missing permission.
This commit changes K-9 Mail's behavior to copy the content to a temporary file in K-9's
cache directory while the activity is still running.

Fixes issue 4847, 5821

This also fixes bugs related to the fact that K-9 Mail didn't save a copy of attached content
in the message database.

Fixes issue 1187, 3330, 4930
Don't stop the activity before attachments have been fetched

Display a progress dialog when the user tries to send the message or
save a draft and the attachments haven't been fetched completely.
Merge branch 'pick_attachment_fix'

Update LocalStore code to handle the newly introduced temporary files
for attachments

Conflicts:
	res/values/strings.xml
	src/com/fsck/k9/activity/MessageCompose.java
Fix caching of fallback contact icons.

The cache key must be consistent with how calcUnknownContactLetter()
works, otherwise one gets the same fallback icon for different senders.
Fix build with latest SDK tools.
Some assorted warning fixes.
Update German translation
Change wording in changelog; fix typos
Use address object as contact picture instead of email address only.

Fixes assignment problems for emails sent by some issue tracking
systems, which send out mails with a fixed mail address on behalf of
different people.