Make medal compile on stable rust

Cargo.toml

@@ -14,7 +14,7 @@ iron = "0.5.1"
 rand = "*"
 mount ="0.3"
 router = "0.5"
-params = "*"
+params = "0.7"
 serde = "1.0"
 urlencoded = "0.5"
 persistent = "0.3"

src/configreader_yaml.rs

@@ -3,7 +3,9 @@ extern crate linked_hash_map;
 use self::linked_hash_map::LinkedHashMap;
 
 use db_objects::{Contest, Taskgroup, Task};
-    
+
+use serde_yaml;
+
 #[derive(Debug, Deserialize)]
 struct ContestYaml {
     name: Option<String>,

src/db_conn_sqlite.rs

@@ -7,8 +7,11 @@ use db_objects::*;
 
 use rand::{thread_rng, Rng};
 
+use time;
+
 use ::functions; // todo: remove (usertype in db)
 
+
 fn hash_password(password: &str, hash: &str) -> String {
    password.to_string() 
 }

src/functions.rs

@@ -2,6 +2,8 @@ use webfw_iron::{to_json, json_val};
 
 use rusqlite::Connection;
 
+use time;
+
 use rand::{thread_rng, Rng};
 
 use db_conn::{MedalConnection, MedalObject};

src/main.rs

-#![feature(extern_prelude)]
+//#![feature(extern_prelude)]
 
 #[macro_use]
 extern crate iron;

src/webfw_iron.rs

@@ -27,6 +27,11 @@ pub use handlebars_iron::handlebars::to_json;
 use iron::prelude::*;
 use iron_sessionstorage::traits::*;
 
+use iron_sessionstorage;
+use iron;
+use reqwest;
+use rusqlite;
+
 pub use serde_json::value as json_val;
 
 use iron::typemap::Key;