fix keyboard/focus regressions

I don't know how it was working the first time.

fixes #4527
Closes #4555
// FREEBIE

AndroidManifest.xml

@@ -233,6 +233,7 @@
 
     <activity android:name=".NewConversationActivity"
               android:theme="@style/TextSecure.LightNoActionBar"
+              android:windowSoftInputMode="stateAlwaysVisible"
               android:configChanges="touchscreen|keyboard|keyboardHidden|orientation|screenLayout|screenSize"/>
 
     <activity android:name=".PushContactSelectionActivity"

res/layout/conversation_activity.xml

@@ -99,7 +99,9 @@
                         android:layout_weight="1"
                         android:nextFocusForward="@+id/send_button"
                         android:nextFocusRight="@+id/send_button"
-                        tools:hint="Send TextSecure message" />
+                        tools:hint="Send TextSecure message">
+                    <requestFocus />
+                </org.thoughtcrime.securesms.components.ComposeText>
 
                 <org.thoughtcrime.securesms.components.camera.HidingImageButton
                         android:id="@+id/quick_attachment_toggle"