Declare the control reference with a var - throws an error otherwise on IE8.
Prefix the geo_field with this - fixes errors on IE8.
Specify a background color for IE8 - otherwise the opacity applies to a transparent background making text impossible to read.
Copy issue tags onto threads. Fixes #106
Extend the group issue filtering to the json api used on the /issues map. Fixes #18
Fix note -> document in explanatory test for library documents.
Full titles for new library items.
Allow tagging of library items when they are being created. Fixes #24
Allow tabs to be 'sticky' by adding the .with-history class

This leaves the default behaviour as having no history. We need the mixture
(e.g. no history on map edit tabs), so this is the cleanest way of adding
the functionality without needing dual declartions (ul.tabs, ul.tabs-with-history)
everywhere. Refs #62
Make various tabs 'sticky', where the user is likely to navigate onwards.

For the history to work each anchor needs to refer to an id, and each
tab must have the corresponding id. The fallback behaviour (first link
references first tab etc) doesn't work when you enable the history.

Closes #62
Subscribe current_user to thread, regardless of the message type they post. Closes #114
Don't show who last posted to a thread, unless you have permission to view the thread.

Closes #125
Update README to remove pivotal references, and explain how the software relates to www.cyclescape.org.
Show a link to the issue when listing threads. Fixes #82
Improve consistency in thread urls by not redirecting to issue thread paths. Closes #104
Supply the correct context to the library tag update response. Fixes #110
Given we know what the users location preferences are, we can give appropriate guidance.
Provide a method to subscribe to all threads on issues in your areas.

Fixes #115
Fix guidance to refer to following rather than subscribe.
Update changelog.