1) NoScript and AdBlocks ports are already ready for K-Meleon (see my Extension page)
2) We aren't against the fact that you realize this localization. You can find some documentation about localization on kko's page
Remark: The file named kmeleonloc.dll has been now renamed kmeleon.dll.
3) If you want to speak about group of layers, K-Meleon 1.1 handle groups which can be use at startup or when using K-Meleon.
4) Mouse gestures are already in K-Meleon, you can choose between K-Meleon, Firefox and Seamonkey implementation.
You can ask questions here about all the problem you ought to have.
Mozilla/5.0 (x11; U; Linux x86_64; fr-FR; rv:38.0) Gecko/20100101 Ubuntu/12.04 K-Meleon/76.0
Mail : alain [dot] aupeix [at] wanadoo [dot] fr
Ubuntu 12.04 - Gramps 3.4.9 - Harbour 3.2.0 - Hwgui 2.20-3 - K-Meleon 76.0 rc