Adjust the format_loc method to be able to present the inline-comments of a pull-request
Small adjustment in the CSS to give a clear background on comments

This is just a start to add a small distinction between code and comments
in pull-requests
Adjust the pull_request template to send the pull-request to the format_loc filter
Allow multiple comments for a single line and sort these comments by date
Adjust the logic to show all the comments added to a line
Fix javascript so that the add comment form is below the latest comment