[mythtv-theming] Recent changes to GUI

[Peter Bennett]

There have been some changes to the GUI over the past year that affect 
themes. I do not know if the themers have been officially notified.

New windows have been added as follows

V29
- 37c172e (2017/02/04) config-ui.xml adds window guistartup - Startup
- 8180243 (2016/09/04) schedule-ui.xml adds window programdetails - 
progInfoList to use instead of html page progdetails, which is no longer 
used.
- 33ab614 (2017/06/11) standardsetting-ui.xml is a new file with window 
settingssetup -  New settings pages

Master
- 61c6429 (2017/10/23) schedule-ui.xml adds window prevreclist - 
Previously Recorded

The changes have been documented in the wiki except for 
standardsetting-ui.xml.

You may want to update themes for these changes to improve the look of 
these new windows.

Peter