- Remove documentation on command line options from invoking.html

  since the man pages are now in the html docs.
- Move information on "starting the server" from install.html to
  a more proper location "invoking.html"
- Add a few more details here and there.


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@87877 13f79535-47bb-0310-9956-ffa450edef68