Stylechanges: Selection in Menu, BrowseGUI options

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@35945 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
[giac] add tcollectsin command : collect trigonometric expression with sin instead of cos

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@35946 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
#4486 - "X close" not showing when only one view is open

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@35947 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Style changes startscreen

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@35948 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
#4474 - new tooltips for web

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@35949 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Changing giac.js to the latest version in web/kickstart.xml

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@35950 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e