-removed unneeded inputType attribute from xml files (+1 squashed commits)

Squashed commits:

[ef54e68] -code style fixing

OpenKeychain/src/main/res/layout/add_email_dialog.xml

@@ -21,7 +21,6 @@
         android:layout_marginTop="16dp"
         android:hint="@string/label_email"
         android:imeOptions="actionNext"
-        android:inputType="textEmailAddress"
         android:textAppearance="?android:attr/textAppearanceMedium" />
 
 </LinearLayout>

OpenKeychain/src/main/res/layout/create_key_email_fragment.xml

@@ -32,7 +32,6 @@
                 android:layout_marginTop="16dp"
                 android:layout_marginBottom="8dp"
                 android:imeOptions="actionNext"
-                android:inputType="textEmailAddress"
                 android:hint="@string/label_email"
                 android:ems="10" />