add ggbApplet.setTextValue(), tidy ggbApplet.setListValue()

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@37120 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
EDAQx: moving EDAQx to JSON (but still not the other devices, as I don't know them)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@37121 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
New buffer size reflects the changes in EDAQx transmission changes (to JSON)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@37122 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e