allow registration of report templates via third party packages.

Allow registration of report templates via third party packages to prevent adding files to bika/lims/browser/analysisrequest/templates/reports if a customer needs personalized layouts.

Registration is done via plone:static directive in a third party package.

<plone:static
      directory="reports"
      type="reports"
      name="customer"
      />

*directory* is the directory of templates in the packages
*type* is the fixed namespace for registering 'report templates'
*name* name to be displayed in 'Available templates' selection. Eg. 'mylayout (customer)'

If this implementation is a way to go for you, i can write some text for the still empty doc page:
https://github.com/bikalabs/Bika-LIMS/wiki/Creating-new-report-templates