repo: Add Initialize method for lengthy ctor operations

SparkleLib/SparkleRepoBase.cs

@@ -130,6 +130,12 @@ namespace SparkleLib {
                     SyncUpBase ();
             };
 
+
+        }
+
+
+        public void Initialize ()
+        {
             // Sync up everything that changed
             // since we've been offline
             if (AnyDifferences) {

SparkleShare/SparkleControllerBase.cs

@@ -622,6 +622,7 @@ namespace SparkleShare {
                 UpdateState ();
             };
 
+            repo.Initialize ();
             Repositories.Add (repo);
         }