Rename input appearance is now much closer to that of release 0.43
Set the context-node class on the input so that the context marker is in the right place.
- simplify the css class handling
- avoid the jumping lines
Merge branch 'master' into dangoor/rename-appearance

Conflicts:
	src/project/FileTreeView.js
Merge pull request #9288 from adobe/dangoor/rename-appearance

Fix appearance of rename input