added base files for new interface
continued progress in redoing the gui
added main changes due to new ui
deleted unneeded files
deleted an icon
added build date on log
added cfg/mov empty folder
avoid creating skybox previews if they already exist
added version.txt to gitignore
modified gradle build file to retrieve the build time
logging changes, npe fixes
changed logging file count and name pattern
set preferred panel size, removed unused class
added frame size checks, fixed npe when missing frame icon
disabling voice in included settings.cfg
implemented custom vpk/folder loading, adapted layout and settings
new custom folder: packed sounds into VPKs, added pldx particles
added initial support for skyboxes in vpk files, removed skybox folder
removed png files from vpk
fixed skyboxes not being loaded correctly from vpk