add: twitter share button.
fix: avoid code break horizontal scroll on little screens.
rename: feed method to index to be more rails style.
fix: submit button style.
update: feed now use index method.
remove: unnecessary simbol indicator.
fix: removed links with display block to avoid 100% width.
update: avoided one extra wrapper.
minor
speed: avoided default scope that is used only in one place. then we can be faster without it.
update: now anti bot script receives the form.
xit: the nested resource does not include the :article_id for some reason, lets go with a manual route.
update: create comment without some features for now.