Removed option "keep selection" from Find & Replace dialog (not sure why I put that there, it doesn't do anything)

Fixed a bug with sector highlighting in Visual Mode (occurred when a sector contains lines that have the same sector on both sides)

@ removed unneeded dxwebsetup from the setup installer (directx redist is already included in the slimdx package)
- Added options to move both floor and ceiling together when a sector height change action is used on walls.

- Fixed highlight and selection in visual mode when shader model 2.0 is not available
- Added option to turn off glow animation of highlight and selection in visual mode

- Pixel Shader model 2.0 is now always used when available (regardless of High Quality Display option)
- Edit Selection mode now updates surface geometry when drag is released

- Some visual aesthetics
@ Fixed the "Release with revision lookup" config output directories

Added source code for Map Statistics plugin. Most simple plugin ever, see this source code to learn the very basics of making a Doom Builder 2 plugin. Lot of comments in the source code to explain why things are needed.

Removed some unneeded punctuation in error/warning messages and hidden the "conversion was needed" warning.

@ Changed code related to displaying status messages and warnings (now ready for action messages in status bar)

- added option to move floor/ceiling when aiming at sidedef in Visual Mode
- added option to edit sector/thing properties immediately after creating a new one
- fixed a bug in the ImageBrowserControl
- Tools.DrawLines now keeps created sectors marked (this is still to be changed so it does not include already existing sectors)
- fixed resize and alignment problem with all windows when used with high screen DPI (large fonts)

- added interface controls for editing mode selection in game configurations

generic system to display sector brightness and textures in their polygons (still buggy, working on it)

- General.Exit() method for plugins to close Doom Builder
- command-line parameter -delaywindow to keep the main window hidden until nothing more to process. This gives plugins the ability to perform an operation without showing the main window at all if the plugin calls General.Exit() before the window is shown. Usefull for batch processes in which no interface window is desired.
- some new plugin events that occur before and after making a new map and opening a map.

- added some icons for copy/paste
- begun working on copy/paste features

renamed Controls namespace to Actions in preparation for separation of user controls into Controls namespace