Widen Popup

Popup with tour text is made wider to accommodate the larger text in the buttons from platform.

Also, removed the use of min-width and max-width in favor of a single width setting.

Usability Tweaks

1. Update default steps

• Move tooltips to better use space
• Modify selectors for course tab to properly select both old and new tabs

2. Fix behavior of newly added default xblock

• Default content to None
• On page loads if content is None, give actual defaults

3. Reintroduce step skipping behavior

Change "Course Tab" selector to select both old and new versions of the tab

Merge pull request #6 from Stanford-Online/v1-studio-ui

V1 studio ui

Update a few default steps

Updates to "Course Tab", "Content", and "Bookmarks" default steps.

Create Platform Tour xBlock with Studio UI

The studio UI allows instructors to enable and disable steps by turning on/off checkboxes.
Also, defines default steps in a python file and adds helper functions:

• get_choices(keys): get selected choices from defaults based on list of keys that is passed in
• get_default_keys(): get all the keys from the default choices list
• get_display_steps(keys): get list of steps for display in LMS given list of keys that is passed in