OE - Refs DB Support

[apocalyptech]

It'd probably be nice if OE's datapack had actual refs support it it (like the BL3+WL refs DBs that I provide off apocalyptech.com). It'd be easy enough to do from a technical perspective. My main concern would be making sure that the database doesn't grow too much in size. I expect it'd probably be fine, though -- the BL3 refs database is about 85MB; I wouldn't expect a BL2 refs DB to exceed that by too much.

(The BL3 refs DB does omit some connections since its generation method doesn't know about numerical suffixes, though, so judging the actual relative size of the datasets is a bit tough.)