Simplified the Workflow class

Moved a couple responsibilities out of the class so that it will be
easier to refactor:

  - translating() was simply not used
  - showOverlay was only being set from WorkflowController.  At that
    point it seems easier to set it directly to the scope.
New workflow handling in the editor (#1523)

Implemented most things in that ticket, namely:
- Use the same workflow for tasks and non-tasks modes
- Use checkboxes to complete workflow stages
- Reworded "Save" -> "Save Draft" and "Complete" -> "Publish"

Still need to implement tasks mode, but the nice thing about this new
layout is that we use the same workflow area regardless of tasks or
collaboration mode.  We just need to change the buttons at the bottom.
Added some support for task workflow

Like I said in the comment, this is just a temporary step until we
implement #1667.
Implemented edit title and description in the workflow

Changed it from a button to a link.  I think that makes more sense.
One more workflow rework

This one makes it feel like to the old system with a button to go to
the next step.
Give the page element absolute positioning.

It contains the other elements, so it should logically take up the
entire page.  This also fixes a layout bug with the video section,
although I don't really understand why.
Merge branch 'dev' into editor-workflow
Show help/instruction overlays correctly (#1675)
Workflow step improvements (#1675)

Fixed button text for the syncing step.  Now says "Start Review".

Fixed borders for the steps.  We now draw a border between the steps
and the border extends the entire width.
Workflow button fixes (#1675)

Changed text back to "Accept" from "Approve".

Fixed color/icon for the send back button.

Changed button CSS so that we don't have a border, we just add an
extra px of padding.  This makes it so that we don't have to worry
about the border color when changing the background color.
Rework workflow content (#1675)

Add a linebreak before the edit title and description link

Added some extra text to explain steps.

Styled text inside steps better.

Make the content inside of the steps line up with the left side of the
heading, rather then the left side of the step number.

Display an error warning if you're on the review step, but don't have
completed subtitles.

Removed code to handle the tasks buttons.  We're going to do a more
dramatic change for approve/review tasks.
Merge branch 'dev' into editor-workflow
Merge branch 'editor-workflow' into editor-review-with-actions
Reworked code to get tasks for the editor

Moved it to TeamVideo.  The nice thing about this is that we can cache
the result.  The code that I'm planning to re-implement the review
mode, will want to do the same lookup, and I didn't want to duplicate
the DB query.
Warning system for issue #735, some cases missing
Re-implemented review/approve mode in the editor

In an attempt to try to clean up the handling of different modes, I
used to behaviors module to implement this.  It's a bit of overkill
right now, but I think it will help keep things sane when we add the
collab model modes to the list.

Still to be done is implementing the JS/HTML/CSS for the review mode.

Created documentation for the editor work modes and the behaviors
module.  Switched to using napoleon to handle this.  The docstrings
are so much nicer than the default sphinx docstrings.

Added a couple of convenience methods to Team and Task
Added back review mode in the editor

Changed the workflow controller code.  Now we have three controllers:

- WorkflowController: handles basic tasks like poping up the edit
  title/description dialog, then delegates the rest of the work to one
  of other controllers.
- NormalWorkflowController handles normal mode -- the same as the old
  WorkflowProgressionController
- ReviewWorkflowController handles review mode

Added some HTML for review mode.  Split up workflow.html into 2 files
-- one for each mode.

Made the video/help section not use WorkflowProgressionController.

- For help we didn't need it at all, because we setup $scope.workflow
  in the AppController
- For video we just needed to move the code that handles the overlay.
  Also renamed same variables that had to do the the subtitle overlay
  to avoid a naming conflict.  Lastly, added some code to actually use
  showSubtitle (previously showOverlay) to hide the subtitles when
  there isn't an active one.
Warning almost done, just need to re-include the icon inside sub itself
Finished warning feature
Started implementing the subtitle action system (#1667)

Wrote the basic code, tests, and documentation.