Refactor app to use AppSettings.h
VIP App Styling Version 1

Adds:
  - VIPColor class to allow for easy customization
    by loading global colors from settings.plist
  - UIColor category providing Hex string color parsing
  - UIImage category providing image scale functionality
  - VIPViewController and VIPTableViewController to handle
    global view styling (such as the bg image)

Styling changes:
  - Nav bar default color
  - Nav bar home icon
  - Tab bar background colors
  - Tab bar selected/standard images/text colors
  - App background image scales with screen size
  - Semi-transparent Table view cells based on primaryTextColor
  - Set app primary/secondary text colors in views
  - Set/Scale polling map icons
  - Set/Scale polling list icons
  - Set segmented control tint color == primaryTextColor
  - Update social media icons
  - Update candidate default blank image icon

Also reverts all Storyboard styling to defaults.
If we are going to allow for customization of the app style
via configuration settings, we need to do all our styling in code.
Brace-ify single-line if statements
Merge branch 'feature/app-styling' into develop
Merge branch 'develop' of github.com:votinginfoproject/ios7-white-label-app into develop
Merge pull request #61 from flibbertigibbet/feature/add-braces-in-tableview-didselectrow

Brace-ify single-line if statements
Update README instructions for clarity based on feedback
Update user configurable strings on home/about pages
Document settings.plist options

Also added BrandNameText key/value pair to settings.plist template
Update localized strings for en/es
Merge branch 'feature/documentation-cleanup' into develop
Fixes #66, remove border from empty table cells
Fixes #67, Remove url string from ContestUrlCell
Update README with better notes/spacing/newlines
Remove HEAD from xctool

The HEAD commit apparently added a breaking change for our combination
of xcode/ios simulator/xctool on the travis stack.
This reverts xctool to use the current stable version (0.1.14) at
time of this commit, which works.
Merge branch 'feature/sprint-4-cleanup' into develop
Fix disappearing map markers
Fix table cell ui bugs
Load election list for userAddress from cache if available
Cache votingInfo queries via CoreData for VotingInfoCacheDays set in settings.plist