SliderMaster - DSP Sliders - utility to adjust DSP levels

I had a couple people report issues so I had to address those issue before continuing development and releases. Those who are testers I plan do upload a v1.18 likely on Saturday.

Those who want to be testers or just want to download an use SliderMaster, just a couple more days and I'll do a general release if this weekend's release has no surprises.

v1.17.7 is available for download, once a few testers have confirmed all is ok, hopefully later today, I will do a release open up the website for all to download.

*********************** V1.17.7 Beta ************************  released Sunday Mar.8th

NOTE: To those who have donated and with version 1.17 comes a new validation server, so you will need to re-validate. To do that first email me ve3cko@interpc .ca request a validation reset, be sure to include your callsign in the email. You will then be notified it's been reset. You then go to Preferences, make sure your callsign is saved. Click the Get Key button, it should turn green and cahange to VALIDATED.

• Added RXant, TXant, Filter and Mode for Active slice under frequency. 
• Added change RXant, TXant, Filter and Mode in Active Slice, select by click on
• ​Added Frequency color of xmit slice changes to red during transmission.
• Fixed, when client disconnected features in Active Slice area disabled, prior if they were clicked would cause an Exception error. 
• Fixed closing program, can now be either "X" top-right or "Exit Program"
• Added when program is closed, the screen position of app as well as if MORE panel is remembered so next time app is opened those screen positions are recalled. ​
• Fixed RX EQ levels adjusting, ON/OFF, FLAT
• Fixed MORE closing with band changes, slice added or removed.
• Fixed Client Slices window height for 2, 4 and 8 slice radios.
• Fixed volume slider color recall in Preferences.
• Issue, RX EQ levels adjusting, ON/OFF, FLAT​ not functional
• Issue, RFgain just adjust for one pan, to be fixed.​