Minor typos/changes, copying chnage in from gplot
Wrapped tests in m6section so fns can be imported
import m6section from m6toolbox in gplot
Renamed m6section to section2quadmesh
Replaced import method of m6toolbox

* Using "import m6toolbox" instead of "from m6toolbox import *"
* Now the static fns are fully named, ie. m6toolbox.section2quadmesh
o Makes clear where/which the static functions are