deleted E6SSM files then replaced with new E6SSM FlexibleSUSY file for
GUT normalised charges.
added sarah/E6SSM files from GUT normalised version.
renamed sarah/E6SSM/E6SSM.m and changed model name inside accordingly.
remove executable flag from model files
remove unsupported MODSEL entries from E6SSM example SLHA input file
Merge remote-tracking branch 'organization/E6SSM-GUT-norm-charges' into development