Click listeners saved in xml too + setters added for listeners. (#4077)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@31808 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Cleaned the getBase64 code a bit, synchronous version works now

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@31809 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Ticket #4080: Michael found a bug in the ticket that I've fixed now

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@31810 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Do not include thumbnail by default in getBase64 call (more consistent)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@31811 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Fixed thumbnail saving for Touch

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@31812 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
#4084 fill type and inverse fill handling fix

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@31813 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e