Add the ability to regenerate cultures

- Added a button to the tools menu for regeneration.
- Regeneration button will handle initial generation of cultures and expansion afterwards.
- Pressing regenerate will warn the user.
- Small cleanup of trailing whitespace.

index.html

@@ -1861,6 +1861,7 @@
           <button id="regenerateStates" data-tip="Click to select new capitals and regenerate states. Military forces will be regenerated as well, burgs will remain as they are">States</button>
           <button id="regenerateProvinces" data-tip="Click to regenerate provinces. States will remain as they are">Provinces</button>
           <button id="regenerateReligions" data-tip="Click to regenerate religions">Religions</button>
+          <button id="regenerateCultures" data-tip="Click to regenerate cultures">Cultures</button>
           <button id="regenerateMilitary" data-tip="Click to recalculate military forces based on current military options">Military</button>
           <button id="regenerateIce" data-tip="Click to icebergs and glaciers">Ice</button>
           <button id="regenerateMarkers" data-tip="Click to regenerate markers. Hold Ctrl and click to set markers number multiplier">Markers</button>

modules/ui/tools.js

@@ -64,6 +64,7 @@ function processFeatureRegeneration(event, button) {
   if (button === "regenerateStates") regenerateStates(); else
   if (button === "regenerateProvinces") regenerateProvinces(); else
   if (button === "regenerateReligions") regenerateReligions(); else
+  if (button === "regenerateCultures") regenerateCultures(); else
   if (button === "regenerateMilitary") regenerateMilitary(); else
   if (button === "regenerateIce") regenerateIce(); else
   if (button === "regenerateMarkers") regenerateMarkers(event); else
@@ -244,6 +245,12 @@ function regenerateReligions() {
   if (!layerIsOn("toggleReligions")) toggleReligions(); else drawReligions();
 }
 
+function regenerateCultures() {
+  Cultures.generate();
+  Cultures.expand();
+  if (!layerIsOn("toggleCultures")) toggleCultures(); else drawCultures();
+}
+
 function regenerateMilitary() {
   Military.generate();
   if (!layerIsOn("toggleMilitary")) toggleMilitary();