Fix link to Amon2::Plugin::Web::FillInForm in POD.
Make Starlet a dependency for the Standalone flavor.

The startup script generated for the Standalone flavor loads Starlet to
run. However the module is not listed in the cpanfile. Add it.
Merge pull request #71 from GeJ/PR-podfix

Fix link to Amon2::Plugin::Web::FillInForm in POD.
Merge pull request #72 from GeJ/PR-starlet_in_standalone

Make Starlet a dependency for the Standalone flavor.