Add help link to nav drawer (#2049)

app/src/main/java/eu/kanade/tachiyomi/ui/main/MainActivity.kt

@@ -24,6 +24,7 @@ import eu.kanade.tachiyomi.ui.manga.MangaController
 import eu.kanade.tachiyomi.ui.recent_updates.RecentChaptersController
 import eu.kanade.tachiyomi.ui.recently_read.RecentlyReadController
 import eu.kanade.tachiyomi.ui.setting.SettingsMainController
+import eu.kanade.tachiyomi.util.openInBrowser
 import kotlinx.android.synthetic.main.main_activity.*
 import uy.kohesive.injekt.injectLazy
 
@@ -91,6 +92,9 @@ class MainActivity : BaseActivity() {
                     R.id.nav_drawer_settings -> {
                         router.pushController(SettingsMainController().withFadeTransaction())
                     }
+                    R.id.nav_drawer_help -> {
+                        openInBrowser(URL_HELP)
+                    }
                 }
             }
             drawer.closeDrawer(GravityCompat.START)
@@ -271,6 +275,8 @@ class MainActivity : BaseActivity() {
         const val INTENT_SEARCH = "eu.kanade.tachiyomi.SEARCH"
         const val INTENT_SEARCH_QUERY = "query"
         const val INTENT_SEARCH_FILTER = "filter"
+
+        private const val URL_HELP = "https://github.com/inorichi/tachiyomi/wiki"
     }
 
 }

app/src/main/res/menu/menu_navigation.xml

@@ -36,5 +36,10 @@
             android:icon="@drawable/ic_settings_black_24dp"
             android:title="@string/label_settings"
             android:checkable="false" />
+        <item
+            android:id="@+id/nav_drawer_help"
+            android:icon="@drawable/ic_help_black_24dp"
+            android:title="@string/label_help"
+            android:checkable="false" />
     </group>
 </menu>

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

@@ -24,6 +24,7 @@
     <string name="label_migration">Source migration</string>
     <string name="label_extensions">Extensions</string>
     <string name="label_extension_info">Extension info</string>
+    <string name="label_help">Help</string>
 
 
     <!-- Actions -->