Added test for short-fat matrices of Issue #1239

Also added skeleton of tests for columns with fewer than 3 rows.
Removed index removal in low degree funqui
Replaced equality checks with tolerance checks
Added constant test and better tolerances

pref.eps -> 10*vscale(g)*epslevel(g), and added a non-quasimatrix
constant valued function test
Implement plateauCheck. First try.
Automatically add labels, titles and grids to plotcoeffs plots.

Closes #1272.
Merge branch 'fix-equi-ctor' into development
Changing xlabel in trigtech case to "Wave number", as suggested by @gradywright.
More modifications.
Merge branch 'feature-plotcoeffs-info' into development
Final modifications of code and examples.
Forgot to half coefficients.
Merge remote-tracking branch 'origin/development' into feature-trigtech-plateauCheck
Merge remote-tracking branch 'origin/development' into feature-trigspec
Merge remote-tracking branch 'origin/feature-trigtech-plateauCheck' into feature-trigspec

Conflicts:
	@trigtech/plateauCheck.m