refactor break of copy/paste code to helper
fix History bug when filtering for assetdef
BlockrIo do 5 retries when it responds 'Too many requests'
some transactions showed up as unconfirmed in history but confirmed in overview
for some reason their status was confirmed but transaction time undefined.
This is a fix, but it might be worth investigating more why this
state happened in the first place.
Merge pull request #2 from hankhero/master

Part 1 some fixes for history
Merge branch 'master' of https://github.com/fanatid/cc-wallet-core
change to chromaway repo
merge with chromaway