Resolved duplication of suggestion in Ember Data

The code in SuggestionsNewRoute submit action now only stores one record for each suggestion made. The code came from what locks said in the comments for PR 33 https://github.com/oliverbarnes/participate-frontend/pull/33.

We are now reworking the Delete action since we found that it does not actually delete the record, but we are making progress, so stay tuned...