Make the Cocoa Temple challenge a ghost replay challenge available from the start

data/challenges/cocoa_temple.challenge

@@ -2,23 +2,30 @@
 <challenge version="3">
     <unlock_list list="false"/>
     <track id="cocoa_temple" laps="3" reverse="false"/>
-    <mode major="single" minor="quickrace"/>
+    <mode major="single" minor="timetrial"/>
-    <requirements trophies="5"/>
+    <requirements trophies="0"/>
 
     <best>
-        <karts number="8"/>
+        <karts number="1"
-        <requirements position="1" time="125"/>
+               replay_file="challenge_cocoa_temple_supertux.replay"/>
+        <requirements position="1"/>
     </best>
     <hard>
-        <karts number="7"/>
+        <karts number="1"
-        <requirements position="1" time="160"/>
+               replay_file="challenge_cocoa_temple_expert.replay"/>
+        <requirements position="1"/>
     </hard>
     <medium>
-        <karts number="6"/>
+        <karts number="1"
+               replay_file="challenge_cocoa_temple_intermediate.replay"/>
         <requirements position="1"/>
     </medium>
     <easy>
-        <karts number="5"/>
+        <karts number="1"
+               replay_file="challenge_cocoa_temple_novice.replay"/>
+        <karts number="1"/>
         <requirements position="1"/>
     </easy>
+
+    <unlock kart="suzanne"/>
 </challenge>

src/challenges/challenge_data.cpp

@@ -435,7 +435,7 @@ void ChallengeData::setRace(RaceManager::Difficulty d) const
     if (m_is_ghost_replay)
     {
         const bool result = ReplayPlay::get()->addReplayFile(file_manager
-            ->getAsset(FileManager::CHALLENGE, m_replay_files[d]),
+            ->getAsset(FileManager::REPLAY, m_replay_files[d]),
             true/*custom_replay*/);
         if (!result)
             Log::fatal("ChallengeData", "Can't open replay for challenge!");