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/tableflip.md

@@ -1,12 +1,12 @@
 ---
 title: TABLEFLIP
 name: TABLEFLIP
-members:
+members: 
 website: https://tableflip.io/
 email: hello@tableflip.io
 twitter: tableflip
 github: hello%40tableflip.html
-telephone:
+telephone: 
 address: Unit 1a, 1 East Dulwich Road,London,SE22 9BA
 latitude: 51.46200700000001
 longitude: -0.06753600000001825
@@ -31,4 +31,4 @@ _We’re your technical co-founder._
 
 Come and talk through your idea with us. We listen, and help define the core problem to be solved. We propose a workplan for a fixed cost 5 day sprint. At the end of the sprint you have something live, to visit or download to your phone; something to test and put in front of your users. Based on your feedback, we work together to define the most important thing for the next workplan.
 
-**Plan. Build. Review.** By repeating this simple pattern we can take you from idea to new business in a matter of weeks.
+**Plan. Build. Review.** By repeating this simple pattern we can take you from idea to new business in a matter of weeks.