Hookup onBoarding screen to app

* I should probably stop calling in an onboarding screen, since it's now
just a way to setup sync.

* It overall feels quite ugly, and unpolished.

lib/app.dart

@@ -1,6 +1,8 @@
 import 'package:flutter/material.dart';
 import 'package:journal/screens/home_screen.dart';
 import 'package:journal/screens/settings_screen.dart';
+import 'package:journal/screens/onboarding_screens.dart';
+import 'package:journal/state_container.dart';
 
 import 'package:firebase_analytics/firebase_analytics.dart';
 import 'package:firebase_analytics/observer.dart';
@@ -18,6 +20,11 @@ class JournalApp extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
+    var stateContainer = StateContainer.of(context);
+    var onCompleted = () {
+      stateContainer.completeOnBoarding();
+    };
+
     return new MaterialApp(
       title: 'GitJournal',
       theme: new ThemeData(
@@ -32,6 +39,7 @@ class JournalApp extends StatelessWidget {
       routes: {
         '/': (context) => HomeScreen(),
         '/settings': (context) => SettingsScreen(),
+        '/setupRemoteGit': (context) => OnBoardingScreen(onCompleted),
       },
     );
   }

lib/screens/onboarding_screens.dart

@@ -134,7 +134,8 @@ class OnBoardingScreenState extends State<OnBoardingScreen> {
                 curve: Curves.easeIn,
               );
 
-              _startGitClone();
+              var appState = StateContainer.of(context).appState;
+              _startGitClone(appState.gitBaseDirectory);
 
               getAnalytics().logEvent(
                 name: "onboarding_public_key_copied",
@@ -275,9 +276,9 @@ class OnBoardingScreenState extends State<OnBoardingScreen> {
     }
   }
 
-  void _startGitClone() async {
+  void _startGitClone(String basePath) async {
     // Just in case it was half cloned because of an error
-    await _removeExistingClone();
+    await _removeExistingClone(basePath);
 
     String error = await gitClone(_gitCloneUrl, "journal");
     if (error != null && error.isNotEmpty) {
@@ -299,17 +300,14 @@ class OnBoardingScreenState extends State<OnBoardingScreen> {
     }
   }
 
-  Future _removeExistingClone() async {
+  Future _removeExistingClone(String baseDirPath) async {
-    // FIXME: Implement this
+    var baseDir = new Directory(baseDirPath);
-    /*
+    var dotGitDir = new Directory(p.join(baseDir.path, "journal", ".git"));
-    var baseDir = await getNotesDir();
-    var dotGitDir = new Directory(p.join(baseDir.path, ".git"));
     bool exists = await dotGitDir.exists();
     if (exists) {
       await baseDir.delete(recursive: true);
       await baseDir.create();
     }
-    */
   }
 }
 

lib/state_container.dart

@@ -10,9 +10,10 @@ import 'package:journal/appstate.dart';
 import 'package:journal/note.dart';
 import 'package:journal/storage/notes_repository.dart';
 import 'package:journal/storage/git_storage.dart';
-import 'package:journal/apis/git.dart';
 import 'package:journal/datetime_utils.dart';
 
+import 'package:journal/apis/git_migration.dart';
+
 class StateContainer extends StatefulWidget {
   final Widget child;
   final bool localGitRepoConfigured;
@@ -185,20 +186,27 @@ class StateContainerState extends State<StateContainer> {
   }
 
   void completeOnBoarding() {
-    setState(() {
+    setState(() async {
-      //this.appState.onBoardingCompleted = true;
+      this.appState.remoteGitRepoConfigured = true;
+      this.appState.remoteGitRepoPath = "journal";
 
-      _persistOnBoardingCompleted();
+      await migrateGitRepo(
+        fromGitBasePath: appState.localGitRepoPath,
+        toGitBasePath: appState.localGitRepoPath,
+        gitBasePath: appState.gitBaseDirectory,
+      );
+
+      noteRepo = new GitNoteRepository(
+        baseDirectory: appState.gitBaseDirectory,
+        dirName: appState.remoteGitRepoPath,
+      );
+
+      _persistConfig();
       _loadNotesFromDisk();
       _syncNotes();
     });
   }
 
-  void _persistOnBoardingCompleted() async {
-    var pref = await SharedPreferences.getInstance();
-    pref.setBool("onBoardingCompleted", true);
-  }
-
   Future _persistConfig() async {
     var pref = await SharedPreferences.getInstance();
     await pref.setBool(