Revert non-ASCII characters from source and configuration files introduced in 157c6af18e.

Fixes #6846

Differential Revision: https://code.wildfiregames.com/D5185
This was SVN commit r27965.

build/resources/0ad.appdata.xml

@@ -5,11 +5,11 @@
   <launchable type="desktop-id">0ad.desktop</launchable>
   <project_license>GPL-2.0+ and CC-BY-SA</project_license>
   <metadata_license>CC-BY-SA-3.0</metadata_license>
-  <name>0 A.D.</name>
+  <name>0 A.D.</name>
   <summary>Real-Time Strategy Game of Ancient Warfare</summary>
   <description>
     <p>
-      0 A.D. is a real-time strategy (RTS) game of ancient warfare.
+      0 A.D. is a real-time strategy (RTS) game of ancient warfare.
       It's a historically-based war/economy game that allows players to relive
       or rewrite the history of thirteen ancient civilizations, each depicted
       at their peak of economic growth and military prowess.

build/resources/0ad.desktop

@@ -1,6 +1,6 @@
 [Desktop Entry]
 Version=1.4
-Name=0 A.D.
+Name=0 A.D.
 Exec=0ad %F
 Icon=0ad
 Terminal=false