Male zmeny v index.html

- prerobenie  settings handleru
- presunutie do ~/data folderu
- odstranenie starych suborov
- pridanie parsovania settings.json
- obsluha SPFFS

data/settings.json

@@ -0,0 +1 @@
+{ "data": [ { "kedy": 0, "cas": "", "datum":"", "edit": true} ] }