CYB-159 track if a student has already answered the share question.  Field name:  "has_answered_share_question"
Merge pull request #83 from coyote/track_share_answer

CYB-159 track if a student has already answered the share question.
CYB-160 - Make Engagement Index work again + big refactoring

https://jira.ets.berkeley.edu/jira/browse/CYB-160


Changes to engagement index & point configuration

* Accessibility changes
* Make the code more DRY
* Split things up into templates
* Make the design between point configuration and engagement index more alike
* Use local image files instead of remote ones
* Make the image (screenshot) responsive
* Add util service for scrolling to an element
* Use the new `has_answered_share_question` value from the back-end
* Create overall CSS style classes and defaults
* Remove `enabled-javascript` reference since the tools will only be loaded within Canvas (requires JS)
CYB-160 - revert back-end change
Merge pull request #84 from christianv/CYB-160

CYB-160 - Make Engagement Index work again + big refactoring
CYB-161  https://jira.ets.berkeley.edu/jira/browse/CYB-160

* This change references to the current user's canvas ID to current_user.canvas_id
* This change should also set up a way to easily extend, and add on other attributes of the current user by modifying ApplicationController#current
* Also adds current_user.user_name data (provided when the app is launched from canvas)
Merge pull request #86 from coyote/current_user_getter_extraction

CYB-161  https://jira.ets.berkeley.edu/jira/browse/CYB-161
[nojira] Removing sidekiq/sidetiq as redid cannot be updated enough to make it work.
Merge pull request #87 from coyote/remove_redis

[nojira] Removing sidekiq/sidetiq
CYB-151  Rewrite the README.md file with updated information.
CYB-151, minor cleanup of text, removal of bash prompt text from shell literal blocks.
Merge pull request #88 from coyote/update_readme

CYB-151  Rewrite the README.md file with updated information.
Fix the current_user code.
Merge pull request #89 from coyote/current_user_code

CYB-163 - Fix the current_user code.
Comment back-end fixed.   No attempt at hiding comment threads.