minor fix

* update comments
* update formattings
remove a series of unrelated marks
update noisy result list
uniform the length of lines of wrapped text
rearrange identifier names for readability
collect native UI element getters
fx29: add TODO comment
fx29: fix broken status text in URL bar

* I don't know what bug about this issue
  see [meta] Implement Australis tab shape & styling
  https://bugzilla.mozilla.org/show_bug.cgi?id=732583
fx29: add menu item for showing panel UI
fx29: remove workaround for a utility function

* https://bugzilla.mozilla.org/show_bug.cgi?id=951975
fx29: add a flag for fixing scheme typos

* https://bugzilla.mozilla.org/show_bug.cgi?id=935377