[Gameplay] Technology | Roman Roads | A special technology for the Romans

Patch by: @wowgetoffyourcellphone
Accepted by: @real_tabasco_sauce
Comments by: @borg-, @chrstgtr
Differential Revision: https://code.wildfiregames.com/D5183
This was SVN commit r27934.

binaries/data/mods/public/simulation/data/technologies/roman_roads.json

@@ -0,0 +1,25 @@
+{
+	"genericName": "Roman Roads",
+	"specificName": {
+		"rome": "Viae Romanum"
+	},
+	"description": "All roads lead to Rome.",
+	"cost": {
+		"stone": 500
+	},
+	"requirements": {
+		"all": [
+			{ "tech": "phase_town" },
+			{ "civ": "rome" }
+		]
+	},
+	"requirementsTooltip": "Unlocked in Town Phase.",
+	"icon": "wheel.png",
+	"researchTime": 60,
+	"tooltip": "All Land Units +5% movement speed.",
+	"modifications": [
+		{ "value": "UnitMotion/WalkSpeed", "multiply": 1.05 }
+	],
+	"affects": ["Unit !Ship"],
+	"soundComplete": "interface/alarm/alarm_upgradearmory.xml"
+}

binaries/data/mods/public/simulation/data/technologies/trader_health.json

@@ -6,7 +6,7 @@
 	},
 	"requirements": { "tech": "phase_town" },
 	"requirementsTooltip": "Unlocked in Town Phase.",
-	"icon": "wheel.png",
+	"icon": "trade_caravan.png",
 	"researchTime": 40,
 	"tooltip": "Land Traders +50% health.",
 	"modifications": [

binaries/data/mods/public/simulation/templates/template_structure_civic_civil_centre.xml

@@ -101,11 +101,12 @@
       phase_city_{civ}
       unlock_shared_los
       unlock_shared_dropsites
-      unlock_spies
-      spy_counter
       archery_tradition
       hoplite_tradition
       hellenistic_metropolis
+      roman_roads
+      unlock_spies
+      spy_counter
     </Technologies>
   </Researcher>
   <Resistance>