Toolbar keyevents - enter and right arrow works now.

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@32911 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
some cleaning (toolbar)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@32912 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
more cleaning (toolbar)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@32913 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Ticket #4206: basic solution to the problem, without caring for efficiency. Efficiency should be taken care of anyway, since the latest changes on DockPanelW.

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@32914 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
toolbar key events: left arrow works on main tools too. (But only if the tool has the focus.)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@32915 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e