test(tiles app): Added tests for index.html scaffolding

Added tests to ensure that index.html is templated properly with the correct variables based on user prompts

Based-on: #45
test(tiles app): minor refactor
test(tiles app): Added extra tests for index.html scaffolding

Now testing for correct templating of UI5 bootstrap location, Component namespace and title in index.html.
Also removed extra whitespace from _index.html.

Based-on: #45
chore(package.json): Fix formatting - had lost tab 4 when using David tool to update deps