Update comments collection in gr-diff-comment-thread when its child
comment changes. Child comment is expected to send comment-update
event.
Change-Id: I8116820679b29b7511719f95ae73b48e2345102c
There is no change in functionality. Only moving things around.
+ Separate html from the js.
+ Place the unit test for a component within the same folder.
+ Organize the components in subfolders.
Change-Id: I51fdc510db75fc1b33f040ca63decbbdfd4d5513