Show friendly formatted state machine statuses

Introduce presenters for connection data (connection and segments).
Present NSI2 connection states as smart statuses

Use a single column to show the status of a connection. The status is
built from the connection's NSI2 states. States that are to be expected
are hidden, like in BoD.
Added path (from/to) for connection segments
Show shortened URNs in connections view

URNs for provider NSA and STPs are shortened in the connections overview
table. The full URN is shown as tooltip.
Split connections list into future, active, past
Turn presenter classes into case classes
Merged connection criteria into ConnectionPresenter

ConnectionPresenter now has all logic for presenting a connection,
including criteria and qualifier logic.
Merge enhancements in connections view