* Apply the same rounding to in message bubbles and conversation list.
Also make them consistent with Android's relative times. Fixes#682
* Show full timestamps when hovering on relative time
* Compute timestamp update delays more precisely:
Set timestamps to self-update as soon as they are able to change
rather than a fixed time since the last update.
* Refactor for customizable/localizable relative times
* Update timestamp tests
* Log timestamp update intervals to help debug #460
1. Update chrome version because v40 fails to clear the session store
2. Add message view to test page and fix bad reference to chrome
3. Update the message view template in tests with new timestmap markup
// FREEBIE
Getting up and running with IndexedDB was pretty easy, thanks to
backbone. The tricky part was making reads and writes asynchronous.
In that process I did some refactoring on Whisper.Threads, which
has been renamed Conversations for consistency with the view names.
This change also adds the unlimitedStorage permission.
This dependency may be a little heavy for our current use case, but we can
roll with it for now and find something slimmer if it turns out yagni.
Closes#77Closes#40
Also,
* moved fetch out of the list view
* removed unused #last() function
* put test setup lines in their own tiny file.
* added data-cover to view script tags for code coveage reports.
