Fix & normalize Coop frontmatter YAML

Also ensure newline at EOF.

This was achieved by running the new normalize_coop_frontmatter.rb
script which basically reads in the frontmatter, parses it and dumps it
back out.

I had to manually fix some telephone numbers which had been incorrectly
parsed as some kind of number rather than as strings.

_coops/cbn.md

@@ -5,9 +5,10 @@ members: 5
 website: http://broadband.coop/
 email: info@broadband.coop
 twitter: cbn_team
-github:
+github: 
 telephone: 0161 283 2675
-address: c/o McKellans,11 Riverview, The Embankment Business Park,Vale Road, Heaton Mersey,Stockport,UK,SK4 3GN
+address: c/o McKellans,11 Riverview, The Embankment Business Park,Vale Road, Heaton
+  Mersey,Stockport,UK,SK4 3GN
 latitude: 53.4067704
 longitude: -2.202668899999935
 clients:
@@ -18,7 +19,7 @@ clients:
 services:
 - business-analysis
 - consultancy
-technologies:
+technologies: 
 ---
 
 At CBN we work to advise national and local Government, urban and rural organisations on ways to develop their digital infrastructure to promote economic development and digital inclusion.
@@ -29,4 +30,4 @@ Too often there is an assumption that once superfast or ultrafast broadband is i
 
 That’s why we have helped develop new types of infrastructure initiative like the Brighton Digital Exchange, a carrier neutral PoP and data centre owned and run by a co-operative of ISPs and digital sector businesses.
 
-CBN has many years’ experience of delivering other innovative projects that shape urban and rural areas through innovation.
+CBN has many years’ experience of delivering other innovative projects that shape urban and rural areas through innovation.