Added JSS DP field to local folders tab.

Also changed order of items on the local folders tab so that AutoPkg
specific things are on top, since they're the most universally useful.
Continued adding JSS integration GUI.

JSS URL, API username, password, and connection test indicator.
Added proper table for JSS distribution point info.
Partial merge with code-clean branch.
Resolved conflict on LGConfigurationWindowController.xib.
Added troubleshooting section to readme.
Added more log events.
IB and LGJSSAddon class rough-in
Version bump.
Merge branch 'v1.1-alpha' into casper-love
initial code stub-out of casper integration,  needs real world testing.
second-pass
	- improved user authentication
	- rework of LGInstaller class to include jss-addon
	- now using LGTestPort to determine reachability
tentatively working against real casper setup
Fixed constraints in Casper section.
add serializer error
remove explicit xml serializer
fixed url construction
update error class to handle NSHTTPURLResponse errors
casper-love refinements #1
Fix bad memory access condition with port tester.