I decided to make here a new topic for the Wargame Mod Installer since the old modding section is not visited anymore, and some important updates could be missed.
About this software:
The Wargame Mod Installer allows an easy, automated and safe distribution of moded files. Besides some simple features like a copy-pasting files it provides also a more specialized functionality, like a replacing certain content files stored inside the game's .dat files. This feature is probable especially valuable for all texture moders, since the distribution of premade .dat files with moded textures is not an easy task, as these texture storing .dat files are really weighty (even up to 3.6 GB). Because the installer provide a way to replace a desired portion of .dat file, there is no need to deploy whole .dat files, but just those content files which are going to be changed. The Installer features also some functionality which allows to keep compatibility between different texture mods, which otherwise is very hard to achieve. More information you can find in the manual.

Before you start, I highly recommend to read the manual, or at least skip to the Quick Start section of it.
Download the Wargame Mod Installer v1.0.0.35
Manual
Source code
Important:
The Wargame Mod Installer requires the .NET Framework 4.5 to run.
The Wargame Mod Installer is released under the GNU GPL license
I also want to thanks enohka for his incredible work on making this game modable and all other people involved in the process.