Changes Rollup, now compiles on latest Rust

Changes Rollup, now compiles on Rust rustc 0.13.0-dev (d13aff122 2014-11-20 19:26:40 +0000)

Also:
Added .idea to .gitignore (so my IDE files aren't included in the changes)
Added rust-url back in as dependency
Added rust-lang/time as a dependency