Disable profiling extension loading by default for new rolling installs.

azuracast.sample.env

@@ -142,12 +142,12 @@ MYSQL_MAX_CONNECTIONS=100
 # Enable the profiling extension.
 # Profiling data can be viewed by visiting http://your-azuracast-site/?SPX_KEY=dev&SPX_UI_URI=/
 # Default: 0
-PROFILING_EXTENSION_ENABLED=1
+# PROFILING_EXTENSION_ENABLED=0
 
 # Profile ALL requests made to this account.
 # This will have significant performance impact on your installation and should only be used in test circumstances.
 # Default: 0
-PROFILING_EXTENSION_ALWAYS_ON=0
+# PROFILING_EXTENSION_ALWAYS_ON=0
 
 # Configure the value for the SPX_KEY parameter needed to access the profiling dashboard
 # Default: dev