[Proposal] Too many configuration parameter in our default xwiki.cfg file - Let's remove them

Hi, I'd like to suggest removing the maximum number of parameters in our default xwiki.cfg file. Right now it makes XWiki too complex. When someone looks at that file it's daunting. I'd prefer the following strategy: * Minimal xwiki.cfg file (we could leave some parameters that we know have to be changed frequently) * Full reference documentation on all parameters in the Admin guide on xwiki.org * We reference the xwiki.org from inside the xwiki.cfg file telling the user to go there to get the full list of parameters * Always have default values for parameters in our code so that we can leave the parameter empty in xwiki.cfg WDYT? Thanks -Vincent