Correct attribution for Wikimedia project visitors and restore grammar

This change largely reverts commit 5ab2d62a7321c973ddecb6cb2b3ee2aa05c48ccd.
The exception being the change from "regulars" to "community".

Change-Id: I28081364fae5de6ea5bcd07dc135251610e6b7d9
Merge "Correct attribution for Wikimedia project visitors and restore grammar"