Fix for ShortBufferException problem introduced in Android 4.3

Not really sure how it's possible for the system to give us an
extra block of data, but it does if both the input and output
buffers are sized the same during the first decrypt.  This
fixes things, but I wish I better understood why it was broken.
Bumping version to 0.9.9.9
Fix for Android PRNG bug.

There is apparently an Android vulnerability with the PRNG it
provides through the JCE. This uses their suggested code to patch
the PRNG, and provides the option to regenerate identity keys.

http://android-developers.blogspot.com/2013/08/some-securerandom-thoughts.html
Updated language translations
Added bulgarian and greek
Bumping version to 1.0
Fix for timeout interval bug

Regardless of which theme is used, the text color for the timeout
  interval was being set to black. This made it difficult to
  read when using the Dark Theme.
Merge pull request #320 from svramusi/master

Tested and merged, thanks @svramusi !
Changed language in notification section of settings from 'select ringtone' to 'sound'.
Switched string constant name for notification sound from preferences__select_reingtone to preferences_sound to match the new value of the constant, 'Sound'.
Merge pull request #358 from WhisperSystems/issue353

"Select Ringtone" preference in "Notifications" section of TextSecure settings now reads "Sound" to better reflect the selection of audio presented.
Correctly preserve MMS image aspect ratios.
ActionBarSherlock verisons now stored as tags

The current release of `ActionBarSherlock` uses tags to store its relases, so the clone command fails. Instead, clone HEAD and switch to the 4.2.0 tag.
Make the switch to gradle!

1) ABS is now published as an AAR, so we can eliminate all local
   dependencies and bundled jars.

2) Upgrade to ABS 4.4.0 (The Last Release) and deal with the loss
   of Sherlock.Dialog by faking it with our own themes.

3) Remove all traces of ant. The modern world is here.
closes #367 - add option to disable audible inthread notifications
Upgrade notification KeyCachingService code to NotificationCompat.Builder
extended log of encrypted and plaintext messages NullPointerException
corrected class info of NullPointerException messages
Merge pull request #367 from nikolai-r/master

add option to disable audible inthread notifications
Merge pull request #373 from d3sre/issues-273

Issues 273