Specify that split_test_modules support children.
Merge pull request #3700 from edx/andya/split_test_has_children

Specify that split_test_modules support children.
resolving display issue where older/smaller courses images wouldn't fill designated area on the student dashboard
Merge pull request #3696 from edx/talbs/fix-lms-dashboard-images

FIX - LMS: Dashboard Course Image Dimensions
Added @ksteph to AUTHORS file

See https://github.com/edx/edx-platform/pull/506
Merge pull request #3710 from edx/db/add-to-authors-file

Added @ksteph to AUTHORS file
i18n: Make .underscore files translatable

Currently the strings in .underscore files are not extracted
by i18n/extract.py, which causes most strings in such files
are not translatable. As there is no existing tools which can
extract messages from these files, a simple shell command is
written to do such job.