First version of a dual-pane layout for tablets

git-svn-id: http://cantata.googlecode.com/svn/trunk@5279 b1e49159-3266-923f-9c3e-04f16369770a
Improve dual-pane layout

git-svn-id: http://cantata.googlecode.com/svn/trunk@5280 b1e49159-3266-923f-9c3e-04f16369770a
Fix ids

git-svn-id: http://cantata.googlecode.com/svn/trunk@5281 b1e49159-3266-923f-9c3e-04f16369770a
Remove width and height declarations (Window does not properly resize to bounds on the phone => upstream bug?)

git-svn-id: http://cantata.googlecode.com/svn/trunk@5282 b1e49159-3266-923f-9c3e-04f16369770a