[CLC-1695] bDrive icons, the classic way

JIRA: https://jira.media.berkeley.edu/jira/browse/CLC-1695
@christianv some concerns with the multiple file versioning already, let me know what you think (minimal renaming and store multiple version vs rename and more backend logic to parse out the interesting piece of the filename. Seems more brittle since google could change the file naming scheme anytime). Preference is to leave it as is for now.