Refs #4325 Making the new Site hook used piwik wide so that when eg. a site name is decorated, it appears in most places decorated.

Fix bug (missing getInstance()). Exception was not shown because tests were not rethrowing the exception

Adding new column 'type' to 'piwik_site' table. Adding setters in Site object. Updating SiteManager tests. Refs #4326

Fixes #4325 New hook to let plugins change the attributes for a website  + moving helper getMinMaxDateAcrossWebsites to Site object

Turns out the earlier cleanup leads up to finding a real bug: idSite=all with empty cache would have errored for any API consumer

archive.php should error with error code 1 also when error happens during init eg. db connect failed

One recorder used in tests as an attempt to limit randomness of data import which may randomly fail tests. (ie. current random build failure)

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