Travian - Changes and fixes on all T4 servers

Many changes and bugfixes will be soon implemented on the Travian T4 servers.
The list of bugfixes follows bellow
- Maintenance at game start
- Game goes into maintenance for no obvious reason
- Troops appear from nowhere
- Troops disappear from villages
- Troops disappear from training queue
- All auction events and all reinforcing nature troops disappear
- Master builder: 2 construction orders are started at same time
- Reports / battle system: spy report shows impossible data (e.g. 5000000 resources of one kind without big warehouses)
- Reports / battle system: tribe of attacking troops gets lost, so attack fails and report shows no troop images
- Reports / battle system: "artifact not found" is shown in report when the artifact actually should have been captured
- European Championship Special deactivated