Wiki data update

Wiki data update
Fix for STUD-1011

Had to change conf.py setting to turn off smartypants formatting
Move default DOC_STORE_CONFIG to common
Merge pull request #1982 from edx/dhm/doc_store_config

Move default DOC_STORE_CONFIG to common
Updates to video documentation

Updates to reflect new video component UI and uploading processes
Merge pull request #1990 from edx/sylvia/documentation/video_documentation_updates

Updates to video documentation
Edits to analytics changes

wiki and user_id_map tables finalized
Update README.md for install instructions
Merge pull request #1993 from edx/markhoeber/documentation/analytics-sprint-12

Markhoeber/documentation/analytics sprint 12
Merge pull request #1991 from edx/jarv/readme-installation

Jarv/readme installation
Reformat xml_importer.py to be more readable
Merge pull request #1994 from edx/db/reformat-importer

Reformat xml_importer.py to be more readable