Collapsed /configs into /devices (or in some cases, /apps or /disks), simplifying the structure a bit

devices/pc/machine/5160/cga/256kb/demo/README.md

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+[IBM PC](machine.xml "PCjs:ibm5160")
+
+The above simulation is configured for a clock speed of 4.77Mhz, with 256Kb of RAM and a CGA display,
+using the original IBM PC Model 5160 ROM BIOS and CGA font ROM.
+
+This PC XT configuration also includes an empty 10Mb hard disk. Use FDISK and then FORMAT to turn it into
+a usable C: drive.
+
+For more control over this machine, try the [Control Panel](debugger/) configuration, featuring the
+built-in PCjs Debugger.

devices/pc/machine/5160/cga/256kb/demo/debugger/machine.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<?xml-stylesheet type="text/xsl" href="/versions/pcjs/1.15.8/machine.xsl"?>
+<machine id="ibm5160" class="pc" border="1" width="980px" pos="center" style="background-color:#FAEBD7">
+	<name pos="center">IBM PC XT (Model 5160), CGA, 256Kb, 10Mb Drive</name>
+	<computer id="xt-cga-256k" name="IBM PC XT" resume="1"/>
+	<ram id="ramLow" addr="0x00000" test="false" comment="ROM BIOS memory test has been disabled"/>
+	<rom id="romHDC" addr="0xc8000" size="0x2000" file="/devices/pc/hdc/ibm-xebec-1982.json"/>
+	<rom id="romBASIC" addr="0xf6000" size="0x8000" file="/devices/pc/basic/ibm-basic-1.10.json"/>
+	<rom id="romBIOS" addr="0xfe000" size="0x2000" file="/devices/pc/bios/5160/1982-11-08.json"/>
+	<video id="videoCGA" screenwidth="960" screenheight="400" scale="true" charset="/devices/pc/video/ibm-mda-cga.json" pos="center" width="960px" padding="8px">
+		<name>Color Display</name>
+	</video>
+	<cpu id="cpu8088" model="8088" autostart="true"/>
+	<keyboard ref="/devices/pc/keyboard/minimal-functions.xml"/>
+	<debugger id="debugger"/>
+	<panel ref="/devices/pc/panel/wide.xml"/>
+	<fdc ref="/disks/pc/samples.xml" width="280px"/>
+	<chipset id="chipset" model="5160" sw1="01001001" pos="left" padleft="8px" padbottom="8px">
+		<control type="switches" class="input" label="SW1" binding="sw1" left="0px"/>
+		<control type="description" class="output" binding="swdesc" left="0px"/>
+	</chipset>
+	<hdc id="hdcXT" drives='[{name:"10Mb Hard Disk",type:3}]'/>
+</machine>

devices/pc/machine/5160/cga/256kb/demo/machine.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<?xml-stylesheet type="text/xsl" href="/versions/pcjs/1.15.8/machine.xsl"?>
+<machine id="ibm5160" class="pc" border="1" width="980px" pos="center" style="background-color:#FAEBD7">
+	<name pos="center">IBM PC XT (Model 5160), CGA, 256Kb, 10Mb Drive</name>
+	<computer id="xt-cga-256k" name="IBM PC XT" resume="1"/>
+	<ram id="ramLow" addr="0x00000"/>
+	<rom id="romHDC" addr="0xc8000" size="0x2000" file="/devices/pc/hdc/ibm-xebec-1982.json"/>
+	<rom id="romBASIC" addr="0xf6000" size="0x8000" file="/devices/pc/basic/ibm-basic-1.10.json"/>
+	<rom id="romBIOS" addr="0xfe000" size="0x2000" file="/devices/pc/bios/5160/1982-11-08.json"/>
+	<video id="videoCGA" screenwidth="960" screenheight="400" scale="true" charset="/devices/pc/video/ibm-mda-cga.json" pos="center" width="960px" padding="8px">
+		<name>Color Display</name>
+	</video>
+	<cpu id="cpu8088" model="8088" autostart="true" pos="left" padleft="8px">
+		<control type="button" class="input" binding="run">Run</control>
+		<control type="button" class="input" binding="reset">Reset</control>
+	</cpu>
+	<keyboard ref="/devices/pc/keyboard/minimal-f1-f10.xml"/>
+	<fdc ref="/disks/pc/samples.xml" pos="right"/>
+	<hdc id="hdcXT" drives='[{name:"10Mb Hard Disk",type:3}]'/>
+	<chipset id="chipset" model="5160" sw1="01001001"/>
+</machine>