API update - new comments format
Handle edge cases occuring in tests
Bug in API: Reply count should also filter by the after value passed
Change in API: hidden_replies field instead of passed_replies
Client side changes for new API

* Handle hierarchal comments data format
* New comments fetching parameters: limit, parent, after
* Link to load more comments
Take max comments to load from config.js
Correct total comments count
Add max-comments limit for nested replies
Handle limit/nested_limit zero

This returns zero comments now
Add some tests
Add a reveal on click parameter
Change default values of config params
Show all comments if limit/nested_limit set as inf
Add i18n for "Hidden"
Update docs
idiomatic python

* make "process_fetched_list" private
* rename fetch_args to args
* a few logic simplifications
remove keyworded function arguments and fix JS hints
translate Hidden to german and french
fetch all nested comments when set to 'inf'
use numerical values in default configuration to match user-provided values