Change from "classic" TS 1.6 imports to the default resolution scheme.

- Use relative imports in place of most of our absolute ones.
- Add "private" ambient modules for modules that we need to import using
an absolute path (e.g. when app/.../test-something.ts needs to import
ui/styling/style-scope)

application/application.android.ts

@@ -1,4 +1,4 @@
-import appModule = require("application/application-common");
+import appModule = require("./application-common");
 import dts = require("application");
 import frame = require("ui/frame");
 import types = require("utils/types");