bugfix (typo) gammaRegularized(4,5) not working [needs backport]

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@23006 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
New button icon for view from plane style bar (orientation): svg file

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@23007 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e