Update vitreum (#946)

- Updates Vitreum to v6.0.1 + some custom fixes.
  - Stylesheets must be imported with `require('./sheet.less');` but can also can now share stylesheets between jsx components.
  - Should eliminate a lot of security concerns with older nested dependencies.
  - Changed a lot of files to make this work
- Also removes dependency on PicoRouter in favor of React-Router

scripts/project.json

@@ -13,7 +13,6 @@
 		"codemirror/mode/javascript/javascript.js",
 		"moment",
 		"superagent",
-		"marked",
-		"pico-router"
+		"marked"
 	]
-}
+}