Release 0.0.05-alpha: guided setup, downloadable certificate, car phone app, media rework

- First run now asks for permissions one at a time, each on its own screen with an Allow or
  Skip, instead of firing every system dialog at once from a cold start
- The head unit certificate can be downloaded straight from the opencardev/aasdk repository
  with one tap, on top of the existing adb-staged and file-import paths; Settings shows which
  source is active and lets an imported or downloaded certificate be removed
- A phone app on the car screen: a keypad and a searchable contacts list, with a confirmation
  card before every call
- The web browser draws its own on-screen keyboard for a page's text fields, so a search box or
  address bar can be typed into from the car screen
- Media player rework: a dedicated Now Playing tab with a bigger, screen-size-aware layout, an
  Up Next tab showing the app's real queue, and Browse/Lyrics tabs that share the same rail
- Waze and Google Messages are marked broken instead of pretending to work; Google's own dialer,
  Assistant, and Android Auto entries are hidden from the car launcher entirely; Aardvark and
  Vivi Music are marked tested and working
- A help screen replaces the old wall of setup text on the home screen
- The display-calibration screen is gone - it did its job

gearslip/src/main/AndroidManifest.xml

@@ -51,6 +51,9 @@
     <uses-permission android:name="android.permission.READ_CONTACTS" />
     <uses-permission android:name="android.permission.ANSWER_PHONE_CALLS" />
 
+    <!-- Placing a call from the car screen's dial pad or contacts list needs this. -->
+    <uses-permission android:name="android.permission.CALL_PHONE" />
+
     <!--
       Declared, not just requested. Templated apps decide whether to talk to a host by asking
       whether it holds this permission (HostValidator.isValidHost checks it before falling back
@@ -66,6 +69,10 @@
     <uses-feature android:name="android.hardware.usb.accessory" android:required="true" />
 
     <queries>
+    <!-- Named directly: current builds have no launcher-category entry point for the MAIN/
+         LAUNCHER query below to find, so the setup guide's Android Auto check needs this to see
+         whether the package is installed at all. -->
+    <package android:name="com.google.android.projection.gearhead" />
     <intent>
         <action android:name="android.intent.action.MAIN" />
         <category android:name="android.intent.category.LAUNCHER" />