fixed resizing for 3d webglwindow
@Gerhard: Please change the camera according to the actual size of the
3d canvas to not stretch the display
Merge branch 'master' of github.com:acardona/CATMAID
added a slashtilesource for slash-separated tiles as those that we're
currently generating for Gerhard
Merge branch 'master' of github.com:acardona/CATMAID

Conflicts:
	django/applications/catmaid/static/WindowMaker.js
	django/applications/catmaid/static/tilesource.js