Less debugging

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@36167 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
[giac] Improves a few examples of definite integration (related to Beta function)
Fixes a improves some algebraic extension handling.
Fix for the piecewise defined equations solver.

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@36168 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
More NPE fixes

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@36169 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Unit ortho vector for plane has same direction as ortho vector (i.e. equation vector)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@36170 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
Changing giac.js to the latest version in web/kickstart.xml

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@36171 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e