New night mode icons.

This commit adds two new icons for night mode on/off status. The icons
represent the moon and the sun, and they are meant to indicate the state
the user will transition to, i.e., the moon icon is used to enable night
more and the sun icon is used to disable night mode.

Also add the original files at 320x320 resolution the icons were created
from, as well as a simple script to generate the assets at the various
resolutions.

The icons were created by Flavio Lerda (flerda@gmail.com) and are
released under the same copyright as the AnkiDroid source code.
Don't show deck upgrade wizard on AnkiDroid version upgrade.

The upgrade wizard will stlil appear on any startup if you have no collection.anki2 file and at least one old .anki file in the AnkiDroid directory. There is also a menu option to manually trigger the wizard.
Add automatic database check on version upgrade.
Release notes screen for 2.0.2.
Merge pull request #93 from hssm/v2.0.2-dev-release-notes

Release notes screen for 2.0.2. Now also includes link to issue tracker.
Merge pull request #92 from hssm/v2.0.2-dev-dbcheck-on-upgrade

On upgrade, do a DB check and don't show upgrade wizard
Issue 1840 - Handle thread cancellation exception
Merge pull request #94 from hssm/v2.0.2-thread-cancel

Fix for Issue 1840 - Handle thread cancellation
Bumped version to 2.0.2beta2
Bumped version code so that the APK can be uploaded to the new Play Store beta feature
Check collection is open before using it in count handler post-execute.
Fixes Issue 1834.
Merge pull request #98 from hssm/Issue1834

Check if the collection is still open upon completing load counts deck task
Merge pull request #89 from flerda/v2.0.2-nightmode

New night mode icons.
Issue 1820 - disable clipboard if any exception is thrown
Merge pull request #100 from hssm/Issue1820

Ignore exceptions when attempting to use the clipboard.
Bumped version to 2.0.2beta3
Bumped version to 2.0.2beta3
Increment version code too
Updated localizations from http://crowdin.net/project/ankidroid using update-localizations.py
Eclipse now seems to favor this order, why not