Simplified overintegration input

The required input for overintegration is not very user friendly. For instance for triangles:

 <E
    COMPOSITE="C[100]"
    BASISTYPE="Modified_A,Modified_B" NUMMODES="4,4"
    POINTSTYPE="GaussLobattoLegendre,GaussRadauMAlpha1Beta0" NUMPOINTS="10,9"
    FIELDS="rho,rhou,rhov,E"
  />

Instead it could be simplified on the user side to

  <E 
    COMPOSITE="C[100]" NUMMODES="4" NUMPOINTS="10" FIELDS="rho,rhou,rhov,E" TYPE="MODIFIED" 
  />

while the appropriate default selections are made in the background (as it already happens when specifying only the number of modes.