constant.cw is now forced to be in the oscam config folder in discordance with the setup

[pr2]

Revision

10994 and later

Issue Description

The patch 10994 from ugola79 allows to edit the constant.cw file from the Webif.
This is on its own a good idea, but the way that it is implemented break the device field for constant.cw reader where we can define any location and any file name.

This is really confusing to put new features in OScam webif that doesn't respect the way we can configure parameters in OScam.

Either we decide to force the path and the filename or we implement this editing feature in a smart way to respect the flexibility of OScam.

When the issue occurs

Since 10994

How the issue is reproducable

Define a reader with:

protocol = constcw
device = /usr/myconstant.key

And try to edit the file (constant.cw) from the Webif