First pass of demo coop instance.
Don't allow every member to view Board Meetings.
Clear pending tasks once a share transaction is dealt with.
Directors page: Don't show management links to Members.
Prerelease bar: don't show in CUK theme; simplify wording.
Don't show Task 'dismiss' links where they will have no effect.

'Dismissing' a task only hides it from the Dashboard; it still appears
in other, more specific, places in the app until it is actually dealt
with. In these other places, displaying the 'Dismiss' link is confusing,
because clicking on it appears to have no effect.
Fix display of pound currency symbol in Rules.
Whitespace.
Fix that AGM 'show' action was missing.
Better output for create_demo_instance Rake task.
Demo instance: Add an electronic election to the AGM.
Merge branch 'coop-demo' into demo-oneclickorgs-com