Client/Manager Release 7.20.0

• Manager: show appropriate Welcome Page on first run.
• Client: pass process priority to wrapper
• Client: disable GET feature of GUI RPC
• Manager: add ctrl-A shortcut to go to advanced view
• Client: allow empty GUI RPC password but show warning
• Client (linux): Ignore tty(S|ACM) devices in TTY idle time calculation
• Client: display IPV6 addresses correctly
• Client: don't tell Manager that graphics app exists if it's still downloading
• Manager: fix alt-space crash
• Manager: fix RTL languages in disk view
• Client: add reset_host_info() GUI RPC
• Client: put CDATA around link field of notices
• Client: fix problems with set_app_config() RPC
• Client: fix overly aggressive project-wide file transfer backoff policy
• Client: fix work-fetch logic when max concurrent limits are used
• Manager: add "Suspend when no mouse/keyboard input in last XX minutes" to prefs dialog
• Manager: correctly handle large numbers in prefs
• Manager (Win): Make Manager DPI unaware to let wxWidgets and Windows scale GUI elements properly
• Manager: fix failure to connect to client with non-English language
• Client (Win): fix detection of Windows product
• Client: Fix bug in new version check
• Mac: fix screensaver preferences dialog under MacOS 12 Monterey
• Mac: ensure curl does not depend on unavailable libraries
• Mac: use newer libraries: c-ares-1.17.2, curl-7.79.1, freetype-2.11.0, openssl-3.0.0, wxWidgets-3.1.5