- overhaul of prettty-printer:
   * use CSS styles instead of hard-coded values
   * get rid of FONT tag
   * update tcl command list for tcl 8.5
   * reactivate links to tcl-commands (of matching version) in pretty
      printed procs
- move configuration variables for external documentation servers to
  apidoc namespace (reduce redundancy of information)
- keep for aolserver user documentation link as they were before, just
  naviserver users see the naviserver documentation
- fix potential bug, when passed-in proc name contains wild-card
  character * ("info procs|commands" return multiple results, "info
  args" raises an error)
- enable proc-view to work with tcl-comands and naviserver/aolserver
  commands as well
- fix outdated URLs
- remove unneeded loop
- move out configuration stuff
- generalizing code
When fetching files we have to include the data model ones in order to look for the drop scripts.
- change to dollar-quoting
- remove commented code
- modernize sql
- modernize SQL
- update documentation
- allow abbreviated man poges, document case
- handle regular cases of util_memoize: insert link for cached function
- beautify tcl-pretty-print
- handle namespaced variables in pretty-printer