COMP: QuadratureSchemeDefinition uninitialized memory/leaks

The ShapeFunctionWeights and QuadratureWeights were not
initialized. Also, a possible memory leak was detected on inspection
(not by valgrind).

Change-Id: I22d0a6a149df8a38d63b0186af18c53b3ba31f3f
Merge topic 'Valgrind_QuadratureSchemeDefinition' into master

a448fb61 COMP: QuadratureSchemeDefinition uninitialized memory/leaks