Added tags to acceptance tests to define multiple shards.
Namespace the acceptance tests so they show up nicely in jenkins

Conflicts:
	cms/djangoapps/contentstore/features/advanced-settings.feature
	cms/djangoapps/contentstore/features/checklists.feature
	cms/djangoapps/contentstore/features/component.feature
	cms/djangoapps/contentstore/features/course-overview.feature
	cms/djangoapps/contentstore/features/course-settings.feature
	cms/djangoapps/contentstore/features/course-team.feature
	cms/djangoapps/contentstore/features/course-updates.feature
	cms/djangoapps/contentstore/features/courses.feature
	cms/djangoapps/contentstore/features/discussion-editor.feature
	cms/djangoapps/contentstore/features/grading.feature
	cms/djangoapps/contentstore/features/html-editor.feature
	cms/djangoapps/contentstore/features/problem-editor.feature
	cms/djangoapps/contentstore/features/section.feature
	cms/djangoapps/contentstore/features/signup.feature
	cms/djangoapps/contentstore/features/static-pages.feature
	cms/djangoapps/contentstore/features/subsection.feature
	cms/djangoapps/contentstore/features/textbooks.feature
	cms/djangoapps/contentstore/features/upload.feature
	cms/djangoapps/contentstore/features/video-editor.feature
	cms/djangoapps/contentstore/features/video.feature
	lms/djangoapps/courseware/features/certificates.feature
	lms/djangoapps/courseware/features/help.feature
	lms/djangoapps/courseware/features/high-level-tabs.feature
	lms/djangoapps/courseware/features/homepage.feature
	lms/djangoapps/courseware/features/login.feature
	lms/djangoapps/courseware/features/lti.feature
	lms/djangoapps/courseware/features/navigation.feature
	lms/djangoapps/courseware/features/problems.feature
	lms/djangoapps/courseware/features/registration.feature
	lms/djangoapps/courseware/features/signup.feature
	lms/djangoapps/courseware/features/video.feature
	lms/djangoapps/courseware/features/word_cloud.feature
Merge pull request #1112 from edx/will/shard-acceptance-tests

Added tags to acceptance tests to define multiple shards.