URLEncode the user image url

If there are multiple people with the same last name, you may end up
with a username that has a space in it.
add a setup script
Uses system locale to set the measurement unit system
Call [super viewDidAppear:] in -[PCNameViewController viewDidAppear:]
URL Encode usernames when "watching" someone
add location details to location tableview
Added corner radius of avatars to make the round
Merge pull request #14 from ksmandersen/master

Make avatars round with corner radius
Merge pull request #13 from jurre/location-details

add own coordinates to location tableview
Merge pull request #10 from MichaelBuckley/call-super-viewDidAppear

Call [super viewDidAppear:] in -[PCNameViewController viewDidAppear:]
Merge pull request #6 from collectiveidea/encode-user-image-url

URLEncode usernames before talking with the server
Merge pull request #7 from jimmyti/master

Uses system locale to set the measurement unit system
Merge pull request #5 from jurre/setup-script

add a setup script
Factor out backends into their own class, configurable at compile time
Factor out push services into their own class, configurable at compile time
Make PCBackend a protocol
Create Xcode groups for backends and push services
Make PCHerokuBackend conform to PCBackend protocol
Fix watching/unwatching
Initial CloudKit backend code without enabling iCloud capabilities