feat(gen:view): Scaffold views with correct UI5 library.

- When the view generator is run it will scaffold out a view that uses the same UI5 library
 as used in the projects index.html (sap.m or sap.ui.commons).

- The view generator now includes a function to determine which library type is used by your
 app: whichUI5Library().

- Minor refactor to the classic app template - the Application.js had spurious whitespace and
 the _index.html created a variable (app) that was never used.

Fixes #53