Use of the main carpentrycon GitHub repo to track issues for all subcommittees

@sstevens2 Raise the use of the main carpentrycon GitHub repo to track issues for all subcommittees (need labels for individual subcommittees and ‘carpentrycon2020’ for the current conference, permissions too for adding labels and assigning tasks).

Start in the main carpentrycon GitHub repository by reviewing the current labels, subcommittee organization, and who can add labels or assign tasks. Done means the repository can track all subcommittee issues with individual subcommittee labels and a carpentrycon2020 label, with the required permissions in place.

Written by the indexing model from the issue text.