make *Weights::getWeightFor*() functions virtual
added tutorial for custom figure of merit
added tutorial for custom weights
added validation to web ui
cosmetic changes to web ui
fixed include lines with ./
use long int for intPow() exponent arg
fixed some implicit integer conversion warnings
fixed check_compiler_flag in waf script
add clang option for int conversion warnings
added missing virtual destructors

and explicit default move constructors for clang
cosmetic change in executable
throw exception if norm-type != 2 for CS:* merit
display norm-type=inf for ∞-WeightedFigureOfMerit