Patch 0.0.13

__NOWYSIWYG__

Features

 * Autorefresh of town view when a building is completed
 * Some Features in the original German post are from version 0.0.12

Bugfixes

 * Fixed error when cancelling a cultural asset treaty
 * Fixed error in displaying of unscilled workers
 * Fixed error that led to negative resources after the plundering
 * Fixed error that led to the disappearance of units
 * Error in the sorting of merchant ships fixed