When using custom rootURL specified in environment.js, the
fastboot-script is still having relative path to local dist path, not
containing rootURL path. The fastboot-script should not be ignored.

html-oriented manifest format
-----------------------------

In the new schema format, which is defined in
ember-fastboot/fastboot@3fd5bc9
the manifest is written into HTML and later extracted by fastboot on
server side instead of previously reading from dist/package.json

Note:
The new schema in fastboot does not handle fastboot config
https://github.com/ember-fastboot/ember-cli-fastboot/tree/e4d0b7c7bcdf82def0dc8726835b49d707673f41#providing-additional-config
The support is added in the #854.

Allow to require module path from whitelisted dependency
-------------------------------------------------------

Incrementing schema to 5 also included the changes in schema 4
strictWhitelist
See ember-fastboot/fastboot#200

Revert back to put config in dist/package.json

add data-fastboot-ignore to unexpected files

properly ignore files that should not execute in fastboot