Update Wowza version in installation doc - 4.1.0
Use variables for media server sources
Class path updated to Wowza 4.1.0
Support live recording per live session
PLAT-1771 #time 1h
Merge pull request #66 from kaltura/3.1.2

Support live recording per live session
Merge branch '3.1.0' into 3.1.3

Conflicts:
	KalturaMediaServer/src/com/kaltura/media/server/VERSION.txt