#4403 #4388 move Insert File and Apply Template to filters in File -> Open

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@35240 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Polynomial class refactoring

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@35241 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e