Move server to (temporarily) require Rust Beta or stable 1.31+

server/src/commands/init.rs

@@ -1,7 +1,7 @@
 use std::path::PathBuf;
 use std::process;
 
-use project::Project;
+use crate::project::Project;
 
 pub fn init(project_path: &PathBuf) {
     match Project::init(project_path) {

server/src/commands/serve.rs

@@ -4,7 +4,7 @@ use std::{
     sync::Arc,
 };
 
-use ::{
+use crate::{
     project::Project,
     web::Server,
     session::Session,