Load data asynchronously; cache checkmarks and streaks

app/src/main/res/layout/list_habits_activity.xml

@@ -1,4 +1,4 @@
-<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools"
     android:id="@+id/container"
     android:layout_width="match_parent"
@@ -13,4 +13,4 @@
         android:layout_height="match_parent"
         tools:layout="@layout/list_habits_fragment" />
 
-</FrameLayout>
+</RelativeLayout>

app/src/main/res/layout/list_habits_fragment.xml

@@ -52,4 +52,12 @@
             style="@style/habitsListButtonsPanelStyle"/>
     </LinearLayout>
 
+    <ProgressBar
+        android:id="@+id/progressBar"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        style="?android:attr/progressBarStyleHorizontal"
+        android:layout_marginTop="37dp"
+        />
+
 </RelativeLayout>

app/src/main/res/values/strings.xml

@@ -41,6 +41,7 @@
     <string name="day_of_week_label_typeface">sans-serif</string>
     <string name="habit_key"></string>
     <string name="offset_key"></string>
+    <string name="toggle_key"></string>
 
     <item name="KEY_TIMESTAMP" type="id"/>
 

app/src/main/res/xml/preferences.xml

@@ -43,14 +43,9 @@
                 android:action="android.intent.action.VIEW"
                 android:data="https://github.com/iSoron/uhabits"/>
         </Preference>
-    </PreferenceCategory>
-
-    <PreferenceCategory
-        android:key="pref_key_misc"
-        android:title="Miscellaneous">
 
 
-        <Preference android:title="Replay app introduction">
+        <Preference android:title="View app introduction">
             <intent
                 android:targetClass="org.isoron.uhabits.IntroActivity"
                 android:targetPackage="org.isoron.uhabits"/>