Removed reportgrid nexus from the set of resolvers/publishers

Issues #536, #535, #520, #519
Rolled back to howl 1.0.1-1 (hopefully that actually works)

Issues #536, #535, #520, #519
Corrected errors in conversion from RST to Markdown; moved Roadmap to the end (where it is less confusing)

Issues #536, #535, #520, #519
Added explanation for how to get up and running with a build environment

Issues #536, #535, #520, #519