fixed bugs in installer and launcher

#Ready modules for Ubuntu: XanMod, Xanmod-edge, Mesa Oibaf, Mesa Kisak, Feral GameMode, MangoHud, vkBazalt, Goverlay, CoreCtrl, Furmark_Pack(OpenGL Benchmark), TFM_Vulkan(Benchmark) #for Linux Mint 19.3 not ready: Feral GameMode, CoreCtrl for install: #download in user space (/home/user/) #go to terminal and inter commands tar -xpJf bzu-gmb-beta4-installer.tar.xz cd ~/bzu-gmb chmod +x bzu-gmb-beta4-installer.sh ./bzu-gmb-beta4-installer.sh