Modules using conditional loading should not fail on older versions

We need to add the OpenmrsComponent annotation, which can be used instead of a combination of @Component and @OpenmrsProfile. In addition it will allow us to support HTML-523 in a way that it's still possible to run the module in versions of OpenMRS released before adding OpenmrsProfile and OpenmrsComponent. Those 2 annotations will be simply ignored so any classes annotated with @OpenmrsComponent (those needed in Openmrs 1.10.x) will not be instantiated as beans.

NOTE: we resigned from OpenmrsComponent in favour of adding its behavior to OpenmrsProfile (see comments below)