Change icon for the view-menu button

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@35230 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
#4408 extra methods in App

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@35231 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
#4408 Sign-in dialog on first run and open Perspective Popup afterwards (desktop)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@35232 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e