set default update interval to 1 day

Author: ckrause

src/include/setup.hpp

@@ -73,7 +73,7 @@ class Setup {
 
  private:
   static constexpr int64_t UNDEFINED_INT = -2;            // cannot use -1
-  static constexpr int64_t DEFAULT_UPDATE_INTERVAL = 3;   // 3 days default
+  static constexpr int64_t DEFAULT_UPDATE_INTERVAL = 1;   // 1 day default
   static constexpr int64_t DEFAULT_MAX_PROGRAM_AGE = 14;  // 2 weeks default
   static constexpr int64_t DEFAULT_MAX_PHYSICAL_MEMORY = 1024;  // 1 GB