Reworked clientside lerping

Now acts as a rubberbanding effect. The result is that movement is now considered correct and adjusted towards the real position if not rather than cautiously moving towards the predicted position.

Fixed local copies of items not respecting their Amount value

- version 4.12.0

- this is version 4.11.3

- this is 4.11.2

- this is version 4.11.1

fix DSDHacked state creation.

Several problems here:

* the crucial call did not override 'mustexist'.
* once created an extended stare would not be looked at anymore.
* extended states received no usage flags.

- this is 4.10.0

- redirect statistics to new database.