Ticket #3703: preparations before adding the close icon for views

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@29317 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Ticket #3703: preparations corrected to follow "CSS class instead of inline style" policy

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@29318 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
3631: Parsing login identifier from login response

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@29319 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e