use standard IM text input convention

app/src/main/java/com/geeksville/mesh/ui/MessagesFragment.kt

@@ -59,9 +59,6 @@ class MessagesFragment : Fragment(), Logging {
 
     // Allows textMultiline with IME_ACTION_SEND
     private fun EditText.onActionSend(func: () -> Unit) {
-        imeOptions = EditorInfo.IME_ACTION_SEND
-        InputType.TYPE_TEXT_FLAG_MULTI_LINE
-        setRawInputType(InputType.TYPE_TEXT_FLAG_CAP_SENTENCES)
         setOnEditorActionListener { _, actionId, _ ->
 
             if (actionId == EditorInfo.IME_ACTION_SEND) {

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

@@ -46,8 +46,8 @@
         android:id="@+id/textInputLayout"
         android:layout_width="0dp"
         android:layout_height="wrap_content"
-        android:layout_marginStart="8dp"
-        android:layout_marginBottom="8dp"
+        android:layout_marginStart="4dp"
+        android:layout_marginBottom="4dp"
         android:hint="@string/send_text"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toStartOf="@+id/sendButton"
@@ -57,6 +57,7 @@
             android:id="@+id/messageInputText"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
+            android:inputType="textMultiLine|textCapSentences"
             android:maxLength="228"
             android:text="" />
 
@@ -66,7 +67,6 @@
         android:id="@+id/sendButton"
         android:layout_width="64dp"
         android:layout_height="64dp"
-        android:layout_marginBottom="4dp"
         android:contentDescription="@string/send_text"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"