User core users' flags if non-core can't fill quota
User core users' flags if non-core can't fill quota

Supersedes and closes #146

Charcoal-SE/metasmoke,SulphurDioxide/metasmoke,angussidney/metasmoke,j-f1/forked-metasmoke,SulphurDioxide/metasmoke,Charcoal-SE/metasmoke,j-f1/forked-metasmoke,j-f1/forked-metasmoke,Charcoal-SE/metasmoke,angussidney/metasmoke,Charcoal-SE/metasmoke,SulphurDioxide/metasmoke,angussidney/metasmoke,angussidney/metasmoke,j-f1/forked-metasmoke