Remove various uses of INTERNAL_ERROR

INTERNAL_ERROR now means there really was some internal error

src/apps.js

@@ -346,7 +346,7 @@ function getDuplicateErrorDetails(errorMessage, locations, domainObjectMap, port
     var match = errorMessage.match(/ER_DUP_ENTRY: Duplicate entry '(.*)' for key '(.*)'/);
     if (!match) {
         debug('Unexpected SQL error message.', errorMessage);
-        return new BoxError(BoxError.INTERNAL_ERROR, new Error(errorMessage));
+        return new BoxError(BoxError.DATABASE_ERROR, errorMessage);
     }
 
     // check if a location conflicts