Feature/cale/fix metadata inheritance

Always compute the metadata inheritance tree, even on a course module, so that when walking down the tree, we always get the right data

Feature/will/courseware lettuce tests

Fix/cdodge/add 500 404 templates to studio

Fix version handling for combined open ended

Fix/will/fix broken jasmine lms tests

Changed constant to uppercase

Skip over fields that are scoped to students when looping through the Co...

Small pylint cleanup

Skip over fields that are scoped to students when looping through the CourseModule fields in the instructor dashboard

Handle days_early_for_beta possibly being a string

Content/rocha/xblocks announcement

that mongo caches are initialized for the test database.
This avoids a warning from the mongo modulestore.

Increased wait time for login screen to reduce false positives.

using terrain.factories.py and capa.tests.response_xml_factory

correct/incorrect/unanswered

already exist

Updated login dialog handling to workaround multiple login dialogs
that sometimes appear on a page (where the first one is hidden)

problems.