Merge pull request #88 from vikramrajkumar/master

Implement wallet import/export to JSON (resolves #66)
test
Merge branch 'master' of github.com:BitShares/bitshares_toolkit
adding fire delegate operations
reduce delegate count for testing
remove sleeps from unit tests
Adding fire operations
expanded test
More work fixing tests (unlocking_test and transfer_test now working).
Fix bug scanning blockchain when blockchain is empty.
update fc
Adding extra databases for proposals and votes
Merge branch 'master' of github.com:BitShares/bitshares_toolkit
updating remove operations in undo code
Fix compiler warnings
Add missing override keyword to new overriding virtual functions
Make wallet unlocking argument order uniform
Minor import/export wallet json fixes