Merge pull request #83 from mmoadeli/MAID-BUG-FIX7

Maid bug fix7
Merge pull request #84 from mmoadeli/MAID-BUG-FIX8

further removal of unnecessary exception throw.
Addition of reverse map for retracing anmaid and maid message id back to the original message id.  Most conservative solution to MAID-554.
Fixed map iterator by adding missing std::make_pair() for reverse_pending_account_message_id
Replaced reverse_dictionary with XOR reversible function for message_id generation.
Merge remote-tracking branch 'upstream/next' into next
Merge remote-tracking branch 'upstream/account_transfer' into account_transfer
style fix
Merge pull request #89 from mmoadeli/MAID-573

Maid 573
Merge branch 'next' into MAID-554_CreateMaidAccount
Merge pull request #91 from benjaminbollen/MAID-554_CreateMaidAccount

Maid 554 create maid account
Merge remote-tracking branch 'upstream/next' into MAID-570
Reflecting LruCache changes