#584 - Updated DTCoreText to 1.6.9

Updated DTCoreText Cocoapod to 1.6.9.  CocoaLumberjack, Mixpanel, Quantcast-Measure and several other dependencies were updated automatically.  Also fixed missing developer provisioning profile.  Updated colorFromHexString to use DTCoreText’s newest method.
Merge pull request #586 from wordpress-mobile/issues/584-update-dtcoretext

#584 - Updated DTCoreText to 1.6.9