Added minting tab. Still WIP
Added minting table colors, enabled row sort, cleaned code
Added minting probability / minting tab legend
Added export on minting tab
Replaced hardcoded values by constants
Fixed time usage
Updated tooltips
Fixed minting tab update
Merge remote-tracking branch 'upstream/master'
Minor fixes
Fixed coin age
Cached minting probability result
Cleaned duplicate method from rpc client
Replaced direct calls on vWalletUpdated by UpdatedTransaction calls
Reworked minting tab update

Fixed under 0 coin age
Removed unconfirmed transactions from outputs shown in minting tab
Added tx hash in minting tab. Fixed sort on MintProbability column
Added tooltip over minting probability cells in minting tab
Merge pull request #77 from daeMOn63/master

Minting tab