Cleanup indentation with clang-format and changed a few variable names

src/config.h

@@ -9,6 +9,8 @@
 #ifndef CONFIG_H
 #define CONFIG_H
 
+#include <glib.h>
+
 extern char *config_path;
 extern char *snapshot_path;
 
@@ -18,8 +20,6 @@ void default_config();
 // freed memory
 void cleanup_config();
 
-int  config_read_file (const char *path);
-int  config_read ();
+gboolean config_read();
 
 #endif
-