Avoid typecast in HTML5

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@27410 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Avoid typecast in HTML5

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@27411 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Fixing JAVA_HOME detection, deleting gwt*byte-cache before each build


git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@27412 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Other cleanups


git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@27413 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Clear CAS on clearConstruction

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@27414 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Null check

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@27415 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Refactoring LAF Events and StyleBar, code cleaning - not finished yet

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@27416 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e