Fixed minor typo in piwigo logging.
Rudimentary collections support for piwigo plugin.
Piwigo: return collections list only to logged in users.
Piwigo: some sanity checks before adding to collection as per Elrond's suggestions.
Piwigo minor fix in categories_getList.
Moved frontpage "welcome" stuff into its own bits file.

This should make it easier to override just that part of the page.

This commit sponsored by David Rylander.  Thank you!
Move "bits" templates with dashes in them to underscores

Moved all references and also added a note to our release notes.

This commit sponsored by Juan Rodriguez.  Thank you!