Fixes the ugly Register User post handler.

backend-actix/src/util/mod.rs

@@ -0,0 +1,11 @@
+use diesel::{r2d2::{PooledConnection, ManageConnection, Pool}};
+
+pub trait GetConnection<T> where T: ManageConnection {
+    fn get_conn(&self) -> PooledConnection<T>;
+}
+
+impl<T: ManageConnection> GetConnection<T> for Pool<T> {
+    fn get_conn(&self) -> PooledConnection<T> {
+        self.get().expect("Couldn't get db connection from pool")
+    }
+}