Fix issue with weird exiting animation from conversation

Fixes #1312
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Add a TrustManager that blacklists via serial numbers.
mark auto-fallback to sms as forcedSms
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group and contact list fixes

1) Updating a group without changing the avatar will keep that
   avatar

2) Prohibit adding non-push users to an existing push group

3) Add Android contacts to the same database. Takes a small amount
   more time and memory, but allows queries to not be a hack, and
   enables us to dedupe numbers in JB and higher devices.

// FREEBIE
ShareActivity, destruction of RecipientsPanel

// FREEBIE
use normal means to set actionbar icon

// FREEBIE
Update ActionBar title on language change

Fixes #1329
// FREEBIE
Merge pull request #1324 from mcginty/actionbar-cleanup

use normal means to set actionbar icon
Extracted group strings for translation + minor fix for outgoing update
- translations were not possible for group emphasises
- (outgoing updates were shown as "... joined the group. Title is now ..."
  rather than "Group updated.".) (reverted that)

Translators should mind that there can be one or many recipients that have joined!