Milestone 'B-Day-Bash'

Changelog:

• Added: Added function to F1-Key
  
• Added: 'Edit Hosts File' in separate thread
  
• Added: New skinning of in-app-editor
  
• Added: Main, 'Lines' replaced with 'Entries'
  
• Added: Better 'Find Duplicates'-Algorithm
  
• Added: 'Entering own DNS Server', format-check
  
• Added: Also format-check in other address-forms
  
• Added: 'Removing Duplicates', Warn if hosts file >2MB
  
• Added: Editor -> Dialog "Opening hosts file"
  
• Added: 'Removing Duplicates' & 'Update Hosts File' -> Cancel button
  
• Fixed: Tools/Help, topics writing
  
• Fixed: Write-order of hosts file by download (order is now like on mainform)
  
• Fixed: Disable DNS Service button text fits now status
  
• Fixed: IP replace was no more working
  
• Fixed: hphosts is not checked after start of app (but should be with settings)