Improve DPI support (#254)

* Improving the DPI handling for most forms, there are still issues with:
* the AboutForm.Designer.cs where the title with the version scales differently.
* the destination picker doesn't seem to scale the font correctly.
Some parts are not tested yet...

* Solved the issue with the destination picker font, and some other small issues.
There still is an issue when using Powertoys (the feature which is experimental), that the capture is somehow skipping.

GreenshotPlugin/Interfaces/IDestination.cs

@@ -1,20 +1,20 @@
 /*
  * Greenshot - a free and open source screenshot tool
  * Copyright (C) 2007-2020 Thomas Braun, Jens Klingen, Robin Krom
- * 
+ *
  * For more information see: http://getgreenshot.org/
  * The Greenshot project is hosted on GitHub https://github.com/greenshot/greenshot
- * 
+ *
  * This program is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation, either version 1 of the License, or
  * (at your option) any later version.
- * 
+ *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
- * 
+ *
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
@@ -104,8 +104,8 @@ namespace GreenshotPlugin.Interfaces {
 		Keys EditorShortcutKeys {
 			get;
 		}
-		
-		/// <summary>
+
+        /// <summary>
 		/// Gets the dynamic destinations
 		/// </summary>
 		IEnumerable<IDestination> DynamicDestinations();