Renzo/fix instructor analytics

Ahodges/documentation/for662

Downgrade scipy, lxml, boto, edx-ora2

Show category when an xblock does not have a default display name

new release of edx-ora2

Fix incorrect max upload file size on forums

Update lxml to 3.3.5

Updating SciPy

Split/perf test

Fix transcripts in XML course when no static_asset_path is set.

Fixed image paths

Fix release notes index

Included adding a general create_toy_course and create_sample_course method for tests

LMS-11090

This reverts commit 079808ee.

Sylvia/docs/relnotes 7 30

Fix false positive test in cms acceptance, harden attach_file helper.

This test was passing in Jenkins, but failing in our Solano runs (and locally on firefox).
This is because it was attaching a file that was not there. This change fixes the test
and makes the attachment method smarter so it will fail if it tries attaching a non-existent
file.

Simplify bok choy environments to inherit pipeline settings from common.

Clytwynec/shard out bokchoy tests