avoid header naming collisions with Base64Transcoder.h

This change avoids header name collisions when a project contains another file
named Base64Transcoder.h (e.g., OAuthConsumer).
Merge pull request #174 from lionheart/master

avoid header naming collisions with Base64Transcoder.h
Fix iOS 7 crash related to non-predefined custom field values
Fixing an IOS7 crash that occurs upon exiting the suggestion list view controller after scrolling.
Fix for load order issue that would result in a 401 on the first try if you passed a user but not a key pair
Bump to 2.0.14
Merge pull request #189 from mikelow/master

Fix for IOS7 non-nilled delegate crasher
Load forum after user in case forum is private and user has credentials
Pass uvts with ticket so that we can wire up traits
Merge master