blur CAS cell, on bluring textfield

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@36662 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
removing unneeded files from previous commit

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@36663 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
CAS substitute dialog styling

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@36664 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
[giac]: solver improvement for solve(((2)*((10)^(x)))+((12)*((10)^(-(x))))=11,x)
Other CAS fixes and improvements, like rsolve for homographic recurrences, Wilcoxon and Mann-Whitney stat. tests, or using rational parametric equation for some conics related commands.
Experimental: lsq now handles arbitrary regression.

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@36665 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e