Simplify the setup of bundled assets (#436)

1. Move the generated file to handlers - it better belongs there
2. Ensure that all file serves are also handled by the asset store

Co-authored-by: Marcos Lilljedahl <marcosnils@gmail.com>

tools.go

@@ -3,5 +3,5 @@
 package tools
 
 import (
-	_ "github.com/jteeuwen/go-bindata"
+	_ "github.com/jteeuwen/go-bindata/go-bindata"
 )