Merge pull request #3 from PandaView/master

nre pull
Merge pull request #5 from PandaView/John

Added some code in PVExistence and PVActive
Merge pull request #6 from PandaView/master

Update Active tree to master
Merge pull request #7 from PandaView/ActiveTree

Merge pull request #6 from PandaView/master
Merge pull request #9 from PandaView/CoderBranch

Merge pull request #3 from PandaView/master
PVGraphicals working with PVBackground
Merge branch 'master' of https://github.com/PandaView/PandaViewLibrary.git
Merge pull request #10 from PandaView/master

Pull latest master into other branches