Change requirements now changes the requirements for all versions.

By changing the requirements for all versions of an extension, we can ensure that
people with newer versions of Brackets will not get offered an old extension that
won't work (this is the main use case for "Change Requirements").
Merge pull request #53 from adobe/dangoor/change-requirements

Change requirements now changes the requirements for all versions.
Adds support for a CA cert
CA certs can be chained (an array)
Merge pull request #54 from adobe/dangoor/support-ca

Add support for CA certificates
Add bootbox license to the notice
Merge branch 'master' into irichter/download-count

Conflicts:
	app.js