position popover so it's not clipped
remove old comment
store intermediate values in vars
Back out Extension Manager for now:
* Remove "File > Extension Manager..." and reinstate "File > Install Extension..."
* Add "Browse Extensions" button to the Install Extension dialog that goes to the wiki page
* Add toolbar icon to open the Install Extension dialog
merge with master
Merge pull request #3544 from adobe/randy/issue-3447

Position Hover Preview popover so it's not clipped
Merge pull request #3564 from adobe/nj/remove-extman

Back out Extension Manager for now:
Updated by ALF automation.
Merge pull request #3571 from adobe/alf

Updated by ALF automation.
Updated by ALF automation.
Merge pull request #3574 from adobe/alf

ALF Automation