bugfix for button coloring, pressed while off  

never color root prim  
use setCam instead of calling savedCam (so don't need to take care of
button coloring and also get chat feedback)  
let user use 1 to 4 for cam positions too  
enhance help message  
remove unneeded if, defCam and comment
change to messages and llDialog
comment on failure to change camera perspective
remove unneeded setting of variable (return)
more comment on cam switch failure
button coloring again
cleanup, button color and change used functions
fix attach, permissions, llResetScript, color
rework structure for permission check

Conflicts:
	LSL/CameraScript.lsl
	LSL/CameraScript.lslp
move check of some commands in front of permissions
combine take and release camCtrl

Conflicts:
	LSL/CameraScript.lsl
	LSL/CameraScript.lslp
fix/enhance listen in add to prev command move  

 - introduced with earlier commit taken from feature branch camera_sync
 - fixed in above branch without mentioning/own commit, as it had side
effect on another added listen command (drive-by fix)
Merge branch 'feature/basic_structure' into develop
Merge branch 'develop'
update News for release  

 - ignore created (Github) html
update Readme for release  

 - explicitely name other improved Camera Control
 - comment on problems when changing perspectives