Replace <term><command><arg> with <term><property><parameter> to describe

options in the config file because:
 * <arg> can only be used within <cmdsynopsis>.
 * <cmdsynopsis> does not allow text outside <command> and <arg>.
 * <arg> does not allow decorating elements like <literal> or <emphasis>.
This fixes #2803057.

Add shortcut entities for commonly used parameters (yes/no, size).
Remove Debian patch which is obsoleted by above changes.

scripts/debian/patches/userguide_Makefile.diff

@@ -1,23 +0,0 @@
-diff -ur lcdproc-0.5dev.orig/docs/lcdproc-user/Makefile.am lcdproc-0.5dev/docs/lcdproc-user/Makefile.am
---- lcdproc-0.5dev.orig/docs/lcdproc-user/Makefile.am	2008-10-10 12:08:10.000000000 +0200
-+++ lcdproc-0.5dev/docs/lcdproc-user/Makefile.am	2009-06-07 15:27:45.000000000 +0200
-@@ -23,6 +23,6 @@
- 
- install-html-userguide: $(xmlto) lcdproc-user.docbook
- 	$(mkinstalldirs) $(userguidedir)
--	$(xmlto) html -o $(userguidedir) lcdproc-user.docbook
-+	$(xmlto) html -o $(userguidedir) --skip-validation lcdproc-user.docbook
- 
- ## EOF
-diff -ur lcdproc-0.5dev.orig/docs/lcdproc-user/Makefile.in lcdproc-0.5dev/docs/lcdproc-user/Makefile.in
---- lcdproc-0.5dev.orig/docs/lcdproc-user/Makefile.in	2009-06-07 15:14:20.000000000 +0200
-+++ lcdproc-0.5dev/docs/lcdproc-user/Makefile.in	2009-06-07 15:29:21.000000000 +0200
-@@ -491,7 +491,7 @@
- 
- install-html-userguide: $(xmlto) lcdproc-user.docbook
- 	$(mkinstalldirs) $(userguidedir)
--	$(xmlto) html -o $(userguidedir) lcdproc-user.docbook
-+	$(xmlto) html -o $(userguidedir) --skip-validation lcdproc-user.docbook
- # Tell versions [3.59,3.63) of GNU make to not export all variables.
- # Otherwise a system limit (for SysV at least) may be exceeded.
- .NOEXPORT: