T-Rex 0.25.6

* Add ETH+ALPH dual mining support for non-LHR cards (see https://github.com/trexminer/T-Rex/wiki/Dual-mining for more details)
* (WebUI) Add an optional "Lock Count" column to track the number of times the GPU hit an LHR lock

Bug fixes:
* (WebUI) Login sessions are preserved between miner restarts if the watchdog is enabled