Just some comments changed

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@23718 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
web: Don't show the symbol button in short textfield.

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@23719 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
My previous changes in css reverted (because not needed).

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@23720 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e