lightweight_activity#serialize_for_portal  include thumbnail_url

"When an author adds a thumbnail to an **activity** the image will be
displayed next to the listing for the activity in the Browse
Instructional Materials section of the portal."

Lara side of : [#57993872]
https://www.pivotaltracker.com/story/show/57993872
Fix failing publication_controller_spec.

https://travis-ci.org/concord-consortium/lara/builds/22804280
Remove rogue console.log
Remove reference to lab.iframe-phone.js (built in now)
Clean up sequence editing form. Create new CSS for sequence editing.
Add thumnail_url to sequences.  Add help-text and preview to thumbnail

[#69218820] Add info below thumbnail URL to indicate correct size of
thumbnail image that should be linked to.

[#69218026] An author can add a thumbnail to a **sequence** in LARA and
publish to the portal so it shows up in the Browse Instructional materials listing

https://www.pivotaltracker.com/story/show/69218026
https://www.pivotaltracker.com/story/show/69218820
Instructions and preview thumbnail for sequences and activities.

Everything for: [#69218820]

https://www.pivotaltracker.com/story/show/69218820
https://www.pivotaltracker.com/story/show/69218026
Add sidebar_title to InteractivePage models.

starts: [#64061442]
Authors can edit the title of the tab on the right of the page.
Currently it always is called "Did you know?" slide-out panel.

https://www.pivotaltracker.com/story/show/64061442
Edit interface, and dynamic display title for "Did you know?" sidebar.

complets: [#64061442]
Authors can edit the title of the tab on the right of the page.
Currently it always is called "Did you know?" slide-out panel.

https://www.pivotaltracker.com/story/show/64061442
Navigation Pagingation (header styles) -- two rows of navigation links.

[#64688658] "Change size of navigation bar to accommodate a second row
of page numbers as necessary."

https://www.pivotaltracker.com/story/show/64688658
(slight adjustment)

[#64688658] "Change size of navigation bar to accommodate a second row
of page numbers as necessary."

https://www.pivotaltracker.com/story/show/64688658
(slight adjustment in pagination box size)

[#64688658] "Change size of navigation bar to accommodate a second row
of page numbers as necessary."

https://www.pivotaltracker.com/story/show/64688658
Change (?) icon to (←)

Finishes [#64061442]

https://www.pivotaltracker.com/story/show/64061442
Better layout for single, and multi-line pagination.

[#64688658] "Change size of navigation bar to accommodate a second row
of page numbers as necessary."

https://www.pivotaltracker.com/story/show/64688658
Some fixes for navigation menu &  old MW-theme for more than 10+ pages.

(pagination MW theme)

[#64688658] "Change size of navigation bar to accommodate a second row
of page numbers as necessary."

https://www.pivotaltracker.com/story/show/64688658
Fix failing spec tests related to navigation items & Pagination.
Fix remaining failing jasmine tests (from change in iframephone)
A few more fussy css bits.
Use simple JS menu to choose login portal.

[#66918404] Clarify login procedure

https://www.pivotaltracker.com/story/show/66918404
Use simple JS menu to choose login portal.   (missed one file in commit)

[#66918404] Clarify login procedure

https://www.pivotaltracker.com/story/show/66918404