For stud-1019

Moved change log to beginning of document.

Added new changes in Mistletoe sprint to change log.

clarified sentence on what's shown at top of page

Changed terminology to not refer to setting grading policy for a
subsection, but selecting an assignment type

Updated some text and all new images

For files & uploads page.  stud-1034

For STUD-1034

Support non-ascii chars as arguments to format.

Bug fixes related to unicode support in export workflow.

Fixes and improvement to LTI.

Grading types should not allow empty field for "Total Number" and "Numbe...

STUD-988

Fix video controls on iPad.

Update changelog with studio marketing site feature

Set the registry for node in prereqs

Removed extra file

Removing long-file-name, stray file from earlier commit

Add instructor notes to document

Change formatting for notes to instructor from table to warning

Change course_id to package_id

Add base package to edxapp page object setup.py

corrects typo in legacy.py (LMS-1675)

Moved bok-choy page objects and setup.py to common/test/bok_choy

Studio HTTPS Fonts (re-enable)

To acknowledge his help with refactoring URLs in our CSS to be
protocol-relative

TinyMCE: Updating Google Font Syntax

on new Locators to make it clear that they have a different syntax
than Location.course_id altho they represent the same info.

Add template instructions for course teams, letting them know where
they should modify the text according to their courses

Fix (re-implement) answer distribution report generation.

This restores functionality that has been broken since the introduction of
XModuleDescriptor/XModule proxying (part of the XBlock transition). It generates
a CSV of all answers for all content of type "problem" in a given course, with a
row per (problem part, answer). The format is:

url_name, display name, answer id, answer, count

Example values:
  url_name = "7f1b1523a55848cd9f5c93eb8cbabcf7"
  display name = "Problem 1: Something Hard"
  answer id = i4x-JediAcdmy-LTSB304-problem-7f1b1523a55848cd9f5c93eb8cbabcf7_2_1
  answer = "Use the Force"
  count = 1138

Since it only grabs things of type "problem", it will not return results for
things like self/peer-assessments. Any Loncapa problem types will show up (so
multiple choice, text input, numeric, etc.)

Instead of crawling the course tree and instantiating the appropriate CapaModule
objects to grab state, this version draws directly from StudentModule. This lets
us skip a lot of processing and most importantly lets us generate the answer
distribution without causing side-effects (since XBlocks auto-save state). It
also lets us take advantage of a read-replica database if one is available, to
minimize locking concerns.

There are minor changes to the legacy dashboard around CSV charset encoding and
a change to OptionResponseXMLFactory to make it more unicode friendly. Answer
distribution output is now also sorted, to group together answers for the same
content piece.

Note that this does not introduce celery into the process. Answer distributions
are still only available for small courses.

This was originally created to fix [LMS-922], but it also addresses [LMS-811] and
possibly other areas in the legacy dashboard where CSV downloads break due to
character encoding issues.

Add handler_url usable by descriptors