Fix for combined Audio/Sub double click
URLs: WebServer to crack up path and options

- cleaner "options" handling to prepare for UDID
- changed atvlogger to print it's argument instead of path
- more cleanup needed for "search"
Revert "URLs: WebServer to crack up path and options"

This reverts commit c54bacfebfd785591caf4519faf5a04f0f5c6577.
2nd try to clean URL/options.

SEARCH:
- search.xml: set search path suitable for PMS.
- WebServer: get rid of fake PlexCommand "Search". Search_Result.xml is
processed like any other XML Template.
- XMLConverter: return Search_Results based on path "/search?".
URL/OPTIONS:
- WebServer: separate "PlexConnect" options
- XMLConverter: rely on WebServer's options, rename PlexUDID to
PlexConnectUDID.
access to settings in {{CMD( )}}

- $<setting> to access aTV setting (movieview, transcoderquality…)
- #<variable> to access template variable
{{URL}} - support no change in path (key='')
Added loadItem back into Nav Bar