Transparent perspectives icons

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@35214 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
new open view menu for the StyleBar (web); design still missing

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@35215 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e