Quickstart CS-Studio download links update

[pwillis-cfs]

The links to the CS-Studio release in the quickstart pdf have changed.

Old:
https://ics-web.sns.ornl.gov/css/products.html
https://ics-web.sns.ornl.gov/css/updates/apps/basic-epics-4.5.0-win32.win32.x86_64.zip
https://ics-web.sns.ornl.gov/css/updates/apps/basic-epics-4.5.0-linux.gtk.x86_64.zip

New:
https://controlssoftware.sns.ornl.gov/css_phoebus/
https://controlssoftware.sns.ornl.gov/css_phoebus/nightly/phoebus-win.zip
https://controlssoftware.sns.ornl.gov/css_phoebus/nightly/phoebus-linux.zip

The classic version of CS-Studio (which currently works) is here:
https://controlssoftware.sns.ornl.gov/css_rcp/
https://controlssoftware.sns.ornl.gov/css_rcp/nightly/sns-css-4.5.0-win32.win32.x86_64.zip
https://controlssoftware.sns.ornl.gov/css_rcp/nightly/sns-css-4.5.0-linux.gtk.x86_64.zip

[petermilne]

Thanks Paul. We have a goal to get to phoebus, but some of the constructs we used with cs-studio aren't supported there so it needs a rethink.

Current preferred download links are in https://github.com/D-TACQ/ACQ400CSS/blob/master/README.md