Qt GUI: Don't Display PoS Orphans
Qt GUI: Display Current Session Orphans Only

Fixes and replaces the previous commit.
Qt GUI: Minor Enhancements
Update LevelDB to v1.15
Start-Up Block Verification Reduced
Stake Weight Added to the Coin Control
Proof-of-Stake Mining Controls Implemented

-stakegen start-up switch enables/disables PoS generation;
getstakegen RPC command displays current PoS generation status;
setstakegen RPC command enables/disables PoS generation.
DNS Seed Nodes Fixed
Qt GUI: Subtransaction Index Removed from Copy Transaction ID
Qt GUI: Dead Lock/Unlock Code Removed from the Coin Control
Emergency Fork

An urgent update to eliminate a critical time warp vulnerability seen
first after block #579985.
Merge pull request #2 from ghostlander/master

Orbitcoin v1.4.0.2