Added 'home' button to tab drawer

app/src/main/java/acr/browser/lightning/activity/BrowserActivity.java

@@ -340,6 +340,7 @@ public abstract class BrowserActivity extends ThemableBrowserActivity implements
         setupFrameLayoutButton(R.id.action_forward, R.id.icon_forward);
         setupFrameLayoutButton(R.id.action_toggle_desktop, R.id.icon_desktop);
         setupFrameLayoutButton(R.id.action_reading, R.id.icon_reading);
+        setupFrameLayoutButton(R.id.action_home, R.id.icon_home);
 
         // create the search EditText in the ToolBar
         mSearch = (AutoCompleteTextView) customView.findViewById(R.id.search);
@@ -2321,6 +2322,10 @@ public abstract class BrowserActivity extends ThemableBrowserActivity implements
             case R.id.new_tab_button:
                 newTab(null, true);
                 break;
+            case R.id.action_home:
+                mCurrentView.loadHomepage();
+                closeDrawers();
+                break;
             case R.id.button_next:
                 mWebView.findNext(false);
                 break;

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

@@ -58,7 +58,7 @@
         android:background="?attr/dividerColor"
         android:baselineAligned="false"
         android:orientation="horizontal"
-        android:weightSum="3">
+        android:weightSum="4">
 
         <FrameLayout
             android:id="@+id/action_back"
@@ -94,6 +94,23 @@
                 android:src="@drawable/ic_action_plus" />
         </FrameLayout>
 
+        <FrameLayout
+            android:id="@+id/action_home"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_weight="1"
+            android:background="?attr/actionBarItemBackground"
+            android:clickable="true">
+
+            <ImageView
+                android:id="@+id/icon_home"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="center"
+                android:contentDescription="@string/action_homepage"
+                android:src="@drawable/ic_action_home" />
+        </FrameLayout>
+
         <FrameLayout
             android:id="@+id/action_forward"
             android:layout_width="match_parent"