CAS / spreadsheet tools bugfix

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@37200 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Make CAS table editable and scrollable on tablets.

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@37201 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Make sure the size is OK in case the whole ap is zoomed via CSS

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@37202 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e