Make the space in 0 A.D. non-breaking throughout the codebase.

Avoid cases of filenames
Update years in terms and other legal(ish) documents
Don't update years in license headers, since change is not meaningful

Will add linter rule in seperate commit

Happy recompiling everyone!

Original Patch By: Nescio
Comment By: Gallaecio
Differential Revision: D2620
This was SVN commit r27786.

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