added a feature to remove fishery comp data or survey comp data

The default option is to use the lcomp data.
But for the data richness group, we want to investigate cases where there aren't any lcomp data for either fishery or survey or both. 
I therefore added an option to turn ON or OFF these comp data. Default to TRUE i.e use the lcomp data.
included the option to use or not to use the age comp data (fishery and/or survey)

Included and explicit option (default to TRUE) to either use or not to use the age comp data. Useful for the data richness group work.
Merge branch 'patch-6' of github.com:Kotkot/ss3sim into data-q-additions
Merge in Kot's changes; include new arg files

Also changed args to use _ instead of .