Promote BIP 2 Draft->Active, and implement it

- Update all Accepted status to Proposed (renamed status)
- The BIP Comments preamble headers added to every BIP
- The License preamble headers have been added to all BIPs with a Copyright section

bip-0125.mediawiki

@@ -4,9 +4,12 @@
   Title: Opt-in Full Replace-by-Fee Signaling
   Author: David A. Harding <dave@dtrt.org>
           Peter Todd <pete@petertodd.org>
-  Status: Accepted
+  Comments-Summary: No comments yet.
+  Comments-URI: https://github.com/bitcoin/bips/wiki/Comments:BIP-0125
+  Status: Proposed
   Type: Standards Track
   Created: 2015-12-04
+  License: PD
 </pre>
 
 ==Abstract==