Changing issue state update closed_at/closed_by
Factor IssueEditor js code, and make it work in modals
Allow github call to take a "path" argument (or method...)

The _http method of github.py took arguments for the API as a kwarg, but
in some cases we have post arguments that are the same as the default
_http arguments, so there is an error:

TypeError: _http() got multiple values for keyword argument 'path'

The exemple here is when adding a PullRequestComment which take a "path"
argument.
Enhance dist_edit to tell key names for specified values
Ability to answer to a PR-comment

We are not able to creates ones for non-existing PullRequestEntryPoints,
for that we need to have the whole PR diff