Upgrade com.scribe to 1.3.7

Use the final 1.x release of Scribe. Scribe 1.3.5 adds a new method
OAuthRequest#setFollowRedirects(), which is needed to be able to
(easily) set no-follow on a single request, instead of globally. There
were no concerning changes between 1.3.5 and 1.3.7, so we might as well
bump to the most recent non-breaking version.

pom.xml

@@ -118,7 +118,7 @@
         <dependency>
             <groupId>org.scribe</groupId>
             <artifactId>scribe</artifactId>
-            <version>1.3.3</version>
+            <version>1.3.7</version>
         </dependency>
         <dependency>
             <groupId>com.google.code.gson</groupId>