http/images/info.png, http/style.css, http/js/functions.js )

* Make instance playlist position consitent with position used in
  inputdeln (starts from 1 and not 0) ( src/misc/vlm.c, http/js/vlm.js )

* Make it possible to use "enter key" in some text boxes to confirm (*)

This one happened each time the message queue was overflowed.
Also (hopefully) fixed a leak that would happen each time no message 
queue were found. I don't know if this condition can ever appear though

* Open the .sub file of the vobsubs, with the ToLocale version of the path. Should fix issues where the path of the vobsubs contains non-ascii chars. The .sub could then not be opened in some cases since it would try to open with the UTF-8 path. (We should check VLC modules for other cases of this annoying problem)

Add some playlist functions

iteminfo: Use infopanel.

status.xml : add "seek" command
vlm, refresh.png : add refresh buttons (page doesn't autorefresh)

share/http/* : display instances for vlm media elements
               some layout changes (inputs and outputs)

preview display in the top left corner of the screen.

                              (instead of stoping after a depth of 2)

src/misc/vlm.c : minor instance information reporting change

 misc/vlm.c : export some p_input variables (state, position, time, length, rate, title, chapter and seekable) when using the vlm "show (media)" command.

support javascript.

Some files uses an empty (only holding a space) subtitle to mark the end of
the previous subtitle. These caused a little gray box to appear with
--freetype-effect 3 before this change