Various improvements by rftr:

- added more toggles to the features screen: drop all, suppression, drassen/city counterattacks, dynamic opinions and dialogue, and weather
- fixed weather rendering check for individual weather types
- added mousewheel support to options screen and features screen to navigate through pages
- added keyboard inputs to options screen and features screen: TAB toggles between features and options, and A/D/leftarrow/rightarrow navigates through pages

git-svn-id: https://ja2svn.mooo.com/source/ja2/trunk/GameSource/ja2_v1.13/Build@9230 3b4a5df2-a311-0410-b5c6-a8a6f20db521

GameSettings.h

@@ -142,6 +142,12 @@ enum
 {
 	FF_FEATURES_SCREEN, // meta!
 	FF_NCTH,
+	FF_DROP_ALL,
+	FF_DROP_ALL_DAMAGED,
+	FF_SUPPRESSION,
+	FF_TRIGGER_MASSIVE_ENEMY_COUNTERATTACK_AT_DRASSEN,
+	FF_AGGRESSIVE_STRATEGIC_AI,
+	FF_AGGRESSIVE_STRATEGIC_AI_2,
 	FF_INTEL, // potential issue: enabling this feature mid-campaign may require users to manually re-open the email for the RIS website...
 	FF_PRISONERS,
 	FF_MINES_REQUIRE_WORKERS,
@@ -154,6 +160,8 @@ enum
 	FF_KERBERUS,
 	FF_FOOD,
 	FF_DISEASE,
+	FF_DYNAMIC_OPINIONS,
+	FF_DYNAMIC_DIALOGUE,
 	FF_ASD,
 	FF_ASD_HELICOPTERS,
 	FF_ENEMY_VEHICLES_CAN_MOVE,
@@ -169,6 +177,10 @@ enum
 	FF_ENHANCED_CLOSE_COMBAT_SYSTEM,
 	FF_IMPROVED_INTERRUPT_SYSTEM,
 	FF_OVERHEATING,
+	FF_ALLOW_RAIN,
+	FF_ALLOW_LIGHTNING,
+	FF_ALLOW_SANDSTORM,
+	FF_ALLOW_SNOW,
 	FF_MINI_EVENTS,
 	FF_REBEL_COMMAND,