TYPO3 Core

For the users to select a distribution,
the install should redirect directly to the
extension manager after the first
login of the admin who set up the site.

Then, the list of TER extensions is loaded
initially and all distributions are shown.

For this to happen, the install tool
needs to add another option that sets
a UC flag in the just created admin
user. This UC flag is evaluted when the
start module should be shown.

Also, it adds some more logic when
redirecting the start module to allow
to directly jump to a modfunc/action.

Additionally, the distribution action
should initially load all extensions
from TER on first hit.