[mythtv] Mythweb support

[Dennis Gustafson]

It looks like there is a need for a couple of fixes to 'mythweb' on both 
29/fixes and master.  I have seen conflicting information if mythweb is 
still supported.


1. Several warning messages related to newer versions of php (I'm using 
PHP 7.2.3) and shown in the web interface.   These are very easy fixes 
and I can supply the updated file if needed.

Warning at /usr/share/mythtv/mythweb/modules/tv/recorded.php, line 188:
!!NoTrans: Use of undefined constant disk_size - assumed 'disk_size' 
(this will throw an Error in a future version of PHP)!!
Warning at /usr/share/mythtv/mythweb/modules/tv/recorded.php, line 189:
!!NoTrans: Use of undefined constant disk_used - assumed 'disk_used' 
(this will throw an Error in a future version of PHP)!!



2.  Videos ( http://localhost/mythweb/video ) table format is not 
displayed properly for 'Default' and other themes.  The only themes that 
display correctly are using a static video.css file.

I assume this is also related to newer versions of php where ( 
/usr/share/mythtv/mythweb/skins/default/video.css.php ) does not display 
correctly.    As a workaround, I am using a static "video.css" for the 
default skin, but it the right way to fix it would probably be a code 
change somewhere else.    I can investigate it further if no developers 
are supporting it.


Thanks,
Dennis