Update fc submodule
Fix typos
Fix warnings
Deprecate BTS_BLOCKCHAIN_DELEGATES in favor of BTS_BLOCKCHAIN_NUM_DELEGATES
Use override keyword when overriding virtual functions
Move new wallet.dox to docs folder
Delete old extended_address files
Merge pull request #69 from vikramrajkumar/master

Cleanup
synced bts_xt_gui with reference client (bts_xt_client)