Assorted cleanups and fixes.

* Clean up spacing/indentation
* Proper enum formatting
* Fix nano dismissal (for real this time)
* Do not copy Player struct when a pointer is right there
* Stop looking after the trade partner has been found
* Make sure we're shifting unsigned values (and 64-bit when they need to be)
* Look for JSONs in tdata/
* Add a dbsaveinterval to the example config.ini, in the login category

src/ItemManager.hpp

@@ -4,10 +4,10 @@
 #include "Player.hpp"
 
 namespace ItemManager {
-    enum class slot {
-        equip = 0,
-        inventory = 1,
-        bank = 3
+    enum class SlotType {
+        EQUIP = 0,
+        INVENTORY = 1,
+        BANK = 3
     };
     void init();