corrections to vdr-1.7.36 conformant Makefile

Hi,

the main Makefile still wasn't vdr-1.7.36 conformant: the webserver resources actually should go to RESDIR, only then the web pages are looking normal again. Also, including $(PLGCFG) was missing, and this was agreed upon in the last status of the Makefile discussion, and is also often very important for patched VDR installations. Please apply, thanks.
Lucian