OAuth login + RHS menu + Approve/remove content + Facebook share

Commits 468e042f3907a7c30a5f95ec86cc414bd502b1ea and 1099f7538c4585a14fea424f982afc054a33ba11 fix problems with Google/FB/Twitter credentials. 

Commit 8ff4d114916926751bd7376b0b4b129d302627ff fixes 'Move "filters" up RHS column'.

Commit e7c6add2c420f1c20b2fb710dd944e878211e26a adds support to remove or approve reported content.

Commit a329d357158d9462f56cb70cc2006b840581a0b6 adds Facebook link sharing.