Feature: Improve profile list performance

[BornToBeRoot]

Please provide some details about this pull request:

• Remove SortDescriptions in CollectionViewSource and Refresh - Re-bind the datasource instead. It's somehow faster than calling Refresh()
• Use virtualizing
• Always show the scroll bar, because the performance is terrible if it is added on mouse over... maybe because the view is calculating the size again...
• Improve code to load group, profiles & profiles list. Reduce calls to update the profiles.
• Reselect or select first profile after search, add, edit, update, delete, etc.
• Update rectangle styles (error & warning)
• Check duplicate group is now case insensitive

Closes #1947
Fix #2019
Fix #2018

Bugs to fix:

• Actions in Settings\Profiles trigger a profiles refresh in the main app even if it's not visible...

Implement:

• NetworkInterface,
• IPScanner,
• PortScanner,
• PingMonitor,
• Traceroute,
• DNSLookup,
• RemoteDesktop,
• PowerShell,
• PuTTY,
• AWSSessionManager,
• TigerVNC,
• WebConsole,
• WakeOnLAN,
• Whois

Tests:

Profiles / Hosts	Result
500	Fast
1 k	Fast
1,5 k	Fast
2 k	OK
2,5 k	Slow
5 k	Slow, but still works
10 k	Unusable

ToDo:

• Update changelog to reflect this changes

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