projects/loopback: update repo name after rename

loopback-example-relation -> loopback-example-relations-basic
Remove node_modules from git
sync: continue on error

Modify the sync script to continue on errors, sync everything that can
be synced, and print all errors at the end.
Increase records-per-page to fix sync problem

LoopBack has more that 30 labels, which is the default number of records
returned by GitHub API.

Increasing the limit defers the problem into future, hopefully we will
never have more than 100 labels.

(Unfortunately the `github` module does not handle "next" link OOTB.)
Merge pull request #6 from strongloop-internal/fix/sync-problem-in-loopback

Fix sync problem in loopback