allow capa poroblems access to anonymous_student_id

fix system->capa_system in capa_problem change for anonid
Reconnecting Token Generator for Annotation Tool
Additional logic to handle more course_image URL edge cases
This changes logic to allow more missed use cases of course_image to
work properly.  The cases are:

. XML courses with the course_image attribute set
. Mongo courses that are imported without a contentstore
. Mongo courses that have course_image set but don't have a content store

It also exports default images_static_course.jpg to
images/static_course.jpg to handle a use case where a course author
uploaded an image to the default location in studio without using the
studio interface for adding course images, they then export the course, and then
import it without a contentstore
Removed diacritic mention and explained token
Fixed Unit Test Issues
Fix comment formatting and Timezone explanation
Added unit signifier - narrower annotation target
Adding additonal path to search for git information on sysadmin dashboard
When viewing the sysadmin dashboard courses tag, we also search the git
repository directory in addition to the DATA_DIR to try and find
the course git repo to get hash, last commit, and last editor information
for each loaded course if available.
put google analytics in quotation marks in linkedin email template
Add ability to deactivate GA snippet
Merge pull request #3606 from edx/renzo/no-ga

Add ability to deactivate GA snippet
removing larger size for CodeMirror for funky visual behavior on Checkbox problems in release
Fixed simple editor text showing in advanced editor.
Remove (Grade Me!) template until it can be productized.
Merge pull request #3611 from edx/frances/fix/codemirror-overflow-checkboxes2

Fix for Codemirror overflowing Multiple Choice modal
Merge pull request #3614 from edx/waheed/fix-simple-problem-editor

Fixed simple problem editor text showing up in advanced editor
Merge pull request #3616 from edx/christina/remove-template

Christina/remove template
add quotation mark to _dashboard_course_listing.html
Merge pull request #3620 from edx/adam-add-quotation-mark

Adam add quotation mark
Show same thing on dash for audit and honor code students.