Replace a bunch of escape sequences.

Unify on using the real letter instead of an escape sequence for better
searchability/readability. There should be no functional change here (if
any, they should be bug fixes).

https://github.com/dcs-liberation/dcs_liberation/issues/2786

resources/factions/dprk_1950_fictional.json

@@ -4,7 +4,7 @@
   "authors": "BenBenBeartrax",
   "description": "<p>Fictional DPRK (North Korea) army around 1955, during the Korean War, with some WW2 planes added in place of their post-war counterparts.</p>",
   "aircrafts": [
-    "Bf 109 K-4 Kurf\u00fcrst",
+    "Bf 109 K-4 Kurfürst",
     "Fw 190 A-8 Anton",
     "Fw 190 D-9 Dora",
     "I-16 Ishak",

resources/factions/germany_1940.json

@@ -7,7 +7,7 @@
     "de_DE"
   ],
   "aircrafts": [
-    "Bf 109 K-4 Kurf\u00fcrst",
+    "Bf 109 K-4 Kurfürst",
     "Ju 88 A-4"
   ],
   "frontline_units": [

resources/factions/germany_1942.json

@@ -7,7 +7,7 @@
     "de_DE"
   ],
   "aircrafts": [
-    "Bf 109 K-4 Kurf\u00fcrst",
+    "Bf 109 K-4 Kurfürst",
     "Ju 88 A-4"
   ],
   "frontline_units": [
@@ -16,7 +16,7 @@
     "Panzerkampfwagen IV Ausf. H",
     "Sd.Kfz.234/2 Puma",
     "Sd.Kfz.251 \"Hanomag\"",
-    "Sturmpanzer IV Brummb\u00e4r"
+    "Sturmpanzer IV Brummbär"
   ],
   "artillery_units": [],
   "logistics_units": [

resources/factions/germany_1944.json

@@ -7,7 +7,7 @@
     "de_DE"
   ],
   "aircrafts": [
-    "Bf 109 K-4 Kurf\u00fcrst",
+    "Bf 109 K-4 Kurfürst",
     "Fw 190 A-8 Anton",
     "Fw 190 D-9 Dora",
     "Ju 88 A-4"
@@ -24,9 +24,9 @@
     "Sd.Kfz.184 Elefant",
     "Sd.Kfz.234/2 Puma",
     "Sd.Kfz.251 \"Hanomag\"",
-    "Sturmgesch\u00fctz III Ausf. G",
-    "Sturmgesch\u00fctz IV",
-    "Sturmpanzer IV Brummb\u00e4r"
+    "Sturmgeschütz III Ausf. G",
+    "Sturmgeschüctz IV",
+    "Sturmpanzer IV Brummbär"
   ],
   "artillery_units": [],
   "logistics_units": [

resources/factions/germany_1944_free.json

@@ -7,7 +7,7 @@
     "de_DE"
   ],
   "aircrafts": [
-    "Bf 109 K-4 Kurf\u00fcrst",
+    "Bf 109 K-4 Kurfürst",
     "Fw 190 A-8 Anton",
     "Fw 190 D-9 Dora"
   ],

resources/factions/israel_1948.json

@@ -8,7 +8,7 @@
   ],
   "aircrafts": [
     "B-17G Flying Fortress",
-    "Bf 109 K-4 Kurf\u00fcrst",
+    "Bf 109 K-4 Kurfürst",
     "P-51D-25-NA Mustang",
     "P-51D-30-NA Mustang",
     "Spitfire LF Mk IX",

resources/factions/syria_1967_with_ww2_weapons.json

@@ -22,7 +22,7 @@
     "PT-76",
     "Panzerkampfwagen IV Ausf. H",
     "S-60 57mm",
-    "Sturmgesch\u00fctz III Ausf. G",
+    "Sturmgeschütz III Ausf. G",
     "T-55A",
     "ZSU-57-2 'Sparka'"
   ],