reset stylingbar after "new"

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@27139 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
#3164 difference between cas and algebra input label coloring
#3144 fixed

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@27140 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
open a new file, if the last used file (tabletGUI) was deleted and you go back from browseGUI to tabletGUI

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@27141 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Slider Dialog Design

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@27142 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e