Rename crates to be in the same top-level crates/ directory

Unblocks #1033.

Author: jyn514

Cargo.toml

@@ -30,8 +30,8 @@ r2d2_postgres = "0.16"
 # iron needs url@1, but it reexports it as iron::url, so we can start using
 # url@2 for other usecases
 url = { version = "2.1.1", features = ["serde"] }
-badge = { path = "src/web/badge" }
-docsrs-metadata = { path = "metadata" }
+badge = { path = "crates/badge" }
+docsrs-metadata = { path = "crates/metadata" }
 backtrace = "0.3"
 failure = { version = "0.1.3", features = ["backtrace"] }
 comrak = { version = "0.8", default-features = false }