l10n improvement, algebra size fix

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@26951 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Do not show the arrow to hide AV

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@26952 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
New algebra view button

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@26953 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e