temporary - Write the card
When retrieving data from trello, only return the last 5 comments
Protect uri when posting the query for the proxy to execute
Format
Filter out the data we do not need when synchronizing the cards from trello
  - [X] Write the last 5 comments
Update comments data to be concatenated with a specific delimiter and
not \n
Open the comments in org-trello's parsing command
- [X] Take control over the test file which is now too big (dispatch in 'namespace' test buffer)