revert reversion

This reverts commit 7bfc4a5442.

Android build is going to have consistent versions again.

Assistant/WebApp/Form.hs

@@ -25,8 +25,12 @@ import Data.String (IsString (..))
 import Control.Monad (unless)
 import Data.Maybe (listToMaybe)
 #endif
+#if MIN_VERSION_yesod_form(1,3,8)
+import Yesod.Form.Bootstrap3 as Y hiding (bfs)
+#else
+import Assistant.WebApp.Bootstrap3 as Y hiding (bfs)
+#endif
 import Data.Text (Text)
-import Assistant.WebApp.Bootstrap3 hiding (bfs)
 
 {- Yesod's textField sets the required attribute for required fields.
  - We don't want this, because many of the forms used in this webapp