- Using '-' instead of '_'
- sidebar does not resize when search bar grows

common.scss contains our overrides for it.

- Original search highlighting modified the text field
- It was a permanent change, it is no longer that way.
- Annotation directive using a mode attribute, to differentiate between viewer and search display
- We show highlighted text only for search results
- It can be used for other differences

Introduce show_search boolean in class Hypothesis

- No longer part of the viewer
- Has its own controller: Search
- Own page: page_search.html

I'm starting to think we should start separating modules in our
angular application by function, rather than having a monolithic
module for each category (filter, service, controller, etc).

Stream improvements 4

- Added link to standalone page for each annotation in userstream
- Handling update/delete well
- Fixed search_raw to pack annotation.id to the answer

The detail view of the user stream is nice to highlight-only annotations

 userstream page does not display text for highlights but shows as much as it can from the quote

For replies it populates the annotation.quote field with the parent's reply.
The userstream.coffee page will use this field if exists.