Update content in the main block

- use the copy about that is the same as the live app
- adjust the loop logic for the listing to handle rows correctly
Fix the links for bands in the main_block partial

Use the slug instead of the bandname
Ignore node_modules dir in the app config
Update the Twitter text

Make it the same as the current live text.
Merge pull request #1 from vprnet/bmc/fort-fixes

Adjust Live From The Fort code to be similar to the current live app