1. PagesController is used to show all domains and general overview of Pages
2. PagesDomainsController is used to manage pages domains

The ZIP archive size is calculated from artifacts metadata that should get uploaded for new artifacts

* Pages are enabled by default on each project
* Add note about using the `only` parameter

- Move UploadsTransfer to ProjectTransfer and inherit from this to UploadsTransfer and PagesTransfer

Revert "Store pages in shared/pages/fqdn/fqdn/public or shared/pages/fqdn/subpath/public - makes it simpler to implement CNAMEs in future"

This reverts commit 86a2a78f0d13a678899460638add6b862059433e.

This reverts commit 0d73bd93bab349d84910cf14773633b8a66df466.