message: Clean up stability code
diff: -# Rhye's and Fall of Civilization - Stability
  -
  -from CvPythonExtensions import *
  -from StoredData import data # edead
  -from Consts import *
  +from Core import *
  from RFCUtils import *
  -import DynamicCivs as dc
  -from operator import itemgetter
  -import math
  -import Periods as periods
  -from Events import handler, events
  -
  -import PyHelpers
  -PyPlayer = PyHelpers.PyPlayer
  -
  -import BugPath
  -from datetime import date
  -
  from Locations import *
  -from Core import *
  from Civics import *
  +from Events import handler, events
  -# globals
  -gc = CyGlobalContext()
  -
  -tCrisisLevels = (
  -"TXT_KEY_STABILITY_CRISIS_LEVEL_TERMINAL",
  -"TXT_KEY_STABILITY_CRISIS_LEVEL_SEVERE",
  -"TXT_KEY_STABILITY_CRISIS_LEVEL_MODERATE",
  -"TXT_KEY_STABILITY_CRISIS_LEVEL_MINOR",
  -"TXT_KEY_STABILITY_CRISIS_LEVEL_MINOR",
  -)
  +import DynamicCivs as dc
  +import math
  +import Periods as periods
  -tCrisisTypes = (
  -"TXT_KEY_STABILITY_CRISIS_TYPE_EXPANSION",
  -"TXT_KEY_STABILITY_CRISIS_TYPE_ECONOMY",
  -"TXT_KEY_STABILITY_CRISIS_TYPE_DOMESTIC",
  -"TXT_KEY_STABILITY_CRISIS_TYPE_FOREIGN",
  -"TXT_KEY_STABILITY_CRISIS_TYPE_MILITARY",
  -)
  tEraAdministrationModifier = (
  100, # ancient
  