#4593 fix for 180 angle between 2 lines (esp. 2 rays with the same start point)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@36720 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
#4590 - changed the view divider colour from dark gray [36668] to purple blue.

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@36721 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Use raw tool names in tool help URL [web]

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@36722 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Use raw tool names in tool help URL [desktop]

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@36723 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
removed printStacktrace

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@36724 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
#4588 - fix

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@36725 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e