EditPage: Show a different label for the button on create vs. modify

Authored by Jdforrester-WMF on Jun 30 2016, 11:53 AM.

Description

EditPage: Show a different label for the button on create vs. modify

This is exceedingly common in CMS software, and it was noted in the work
on T131132 that MediaWiki is unusual in not differentiating these cases.

Bug: T139033
Change-Id: Ie81b5edd275963a965cd44d0fd325cae9ee2f1a6

Details