Add the ability to regenerate cultures (#495)

* 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.

* Refreshing cultures editor updates culture centers

* Regenerating cultures refreshes the culture editor

* Added a function to refresh all open editors

* Reset burg and state cultures after regeneration

* Address the problem of potential data loss

Any errors while iterating the states or burgs could potentially lose the index 0 metadata stored in the arrays. This will instead track the index and ignore the 0th result.

* Religions update cultures on culture regeneration

Updated function names to be more similar and more descriptive

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>
@@ -3456,7 +3457,7 @@
           <div data-tip="Military personnel rate (% of state population). Depends on war alert. Click to sort" style="width: 3.7em" class="sortable" data-sortby="rate">Rate&nbsp;</div>
           <div data-tip="War Alert. Modifier to military forces number, depends of political situation. Click to sort" class="sortable" data-sortby="alert">War Alert&nbsp;</div>
         </div>
-  
+
         <div id="militaryBody" data-type="absolute"></div>
       </div>
 
@@ -3486,7 +3487,7 @@
           <div data-tip="Regiment emblem and name. Click to sort by name" style="width: 12em" class="sortable alphabetically" data-sortby="name">Name&nbsp;</div>
           <div data-tip="Total military personnel (not considering crew). Click to sort" style="margin-left: .8em" id="regimentsTotal" class="sortable icon-sort-number-down" data-sortby="total">Total&nbsp;</div>
         </div>
-  
+
         <div id="regimentsBody" data-type="absolute"></div>
       </div>