[SSK] better logging when we fail to get DB keys

// FREEBIE

Podfile

@@ -4,7 +4,7 @@ source 'https://github.com/CocoaPods/Specs.git'
 target 'Signal' do
     pod 'SocketRocket',               :git => 'https://github.com/facebook/SocketRocket.git'
     pod 'AxolotlKit', git: 'https://github.com/WhisperSystems/SignalProtocolKit.git'
-    pod 'SignalServiceKit',           git: 'https://github.com/WhisperSystems/SignalServiceKit.git', branch: 'mkirk/dont-reset-storage-before-first-unlock'
+    pod 'SignalServiceKit',           git: 'https://github.com/WhisperSystems/SignalServiceKit.git', branch: 'master'
     #pod 'SignalServiceKit',           path: '../SignalServiceKit'
     pod 'OpenSSL'
     pod 'PastelogKit',                '~> 1.3'

Podfile.lock

@@ -121,7 +121,7 @@ DEPENDENCIES:
   - OpenSSL
   - PastelogKit (~> 1.3)
   - SCWaveformView (~> 1.0)
-  - SignalServiceKit (from `https://github.com/WhisperSystems/SignalServiceKit.git`, branch `mkirk/dont-reset-storage-before-first-unlock`)
+  - SignalServiceKit (from `https://github.com/WhisperSystems/SignalServiceKit.git`, branch `master`)
   - SocketRocket (from `https://github.com/facebook/SocketRocket.git`)
   - ZXingObjC
 
@@ -129,7 +129,7 @@ EXTERNAL SOURCES:
   AxolotlKit:
     :git: https://github.com/WhisperSystems/SignalProtocolKit.git
   SignalServiceKit:
-    :branch: mkirk/dont-reset-storage-before-first-unlock
+    :branch: master
     :git: https://github.com/WhisperSystems/SignalServiceKit.git
   SocketRocket:
     :git: https://github.com/facebook/SocketRocket.git
@@ -139,7 +139,7 @@ CHECKOUT OPTIONS:
     :commit: 714f5ebe199ecc999b33c6f97a4bb57e2db90e75
     :git: https://github.com/WhisperSystems/SignalProtocolKit.git
   SignalServiceKit:
-    :commit: 4846aabd13d30bb39bcc3bea395abe40beaced57
+    :commit: a112930277890f78676ae32632e9e1ed44034c45
     :git: https://github.com/WhisperSystems/SignalServiceKit.git
   SocketRocket:
     :commit: 41b57bb2fc292a814f758441a05243eb38457027
@@ -170,6 +170,6 @@ SPEC CHECKSUMS:
   YapDatabase: b1e43555a34a5298e23a045be96817a5ef0da58f
   ZXingObjC: bf15b3814f7a105b6d99f47da2333c93a063650a
 
-PODFILE CHECKSUM: 92037a2e2a31e58603ec77779d6e87f5f54b0d2a
+PODFILE CHECKSUM: cb24c78080551874a45d1a20de4a1bef7427b41f
 
 COCOAPODS: 1.0.1