Please see https://github.com/diaspora/diaspora/issues/5483#issuecomment-109277476 (+5 squashed commits)
Squashed commits:
[62f38a6] Wrap all handlers with document.ready()

Also add the copyright at the top of the file.
[e861587] Split up show_comments handling

Currently there are two classes that have the
class show_comments. I renamed one to
"back_to_stream_element_top" as it is responsible
for scrolling the user all the way up to the top
when clicked. The other which toggles the
reactions will remain as "show_comments".
[a8dbc4e] Remove unused "cancel new comment" action
[db575cc] Move comment related js to mobile_comments.js
[de44f81] Move add comment container to new comment partial