Check for non-existing files & init with default values

fixes #63

files/default/hangman.json

@@ -0,0 +1,5 @@
+{
+  "guessed": [],
+  "guesses": 0,
+  "word": ""
+}

files/default/lastTasks.json

@@ -0,0 +1,9 @@
+{
+  "interest": 0,
+  "lost": 0,
+  "poke": 0,
+  "prison": 0,
+  "birthdays": 0,
+  "channels": 0,
+  "remind": 0
+}

files/default/locked.json

@@ -0,0 +1,4 @@
+{
+  "locked": false,
+  "until": -1
+}

files/default/lost.json

@@ -0,0 +1,4 @@
+{
+  "lost": 0,
+  "today": 0
+}

files/default/stats.json

@@ -0,0 +1,19 @@
+{
+  "cf": {
+    "h": 0,
+    "t": 0
+  },
+  "dice": {
+    "2": 0,
+    "5": 0,
+    "3": 0,
+    "6": 0,
+    "1": 0,
+    "4": 0
+  },
+  "rob": {
+    "robs_success": 0,
+    "robs_failed": 0,
+    "bail_paid": 0.0
+  }
+}

files/default/ufora_notifications.json

@@ -0,0 +1,12 @@
+{
+  "Algoritmen en Datastructuren 2": [],
+  "Communicatienetwerken": [],
+  "Computerarchitectuur": [],
+  "Functioneel Programmeren": [],
+  "Multimedia": [],
+  "Software Engineering Lab 1": [],
+  "Statistiek en Probabiliteit": [],
+  "Systeemprogrammeren": [],
+  "Webdevelopment": [],
+  "Wetenschappelijk Rekenen": []
+}