Try to avoid ../../../Foo/Bar import mess

[dsebastien]

As an alternative to #76, we could leverage the following:

• baseUrl, rootDirs and paths properties in tsconfig.json (planned for TS 2.0, requires nightly build for now: Path mappings based module resolution microsoft/TypeScript#5039)
• resolve.root array in webpack config: should have helpers.root("src") in it

With those two, both TS & Webpack should be happy and let us write import statements relatively from src

[dsebastien]

I tested the above successfully, so that's a viable alternative and does not require an additional dependency as #76 requires and no specific syntax.

[dsebastien]

Cleanest alternative: barrels
index.ts files in each folder re-exporting classes, constants, etc
up to the root level where the whole app's API gets re-exported