Plugin test coverage

Here is a recap of which plugins are properly tested, and which are not. Ideally, we should strive for 100% coverage :-)

To make this dream a reality, please attach a test file to your pull requests! This way, the percentage at least won’t go down.

Current percentage: 85%

Plugin name	Test status
antivirus	OK
compname	OK
filedialogmru	OK
gpo	MISSING
kb	MISSING
keyboard	OK
lastloggedon	OK
lastshutdown	OK
localgroups	OK
localusers	OK
mndmru	OK
mstscmru	OK
portproxy	OK
printer_history	OK
printer_ports	OK
proxy	OK
putty	OK
rdphint	OK
recentdocs	OK
regtime	MISSING
run	OK
runmru	OK
services	OK
shimcache	OK
srum	MISSING
sysinternals	OK
systeminfo	OK
tasks	OK
teamviewer	MISSING
timezone	OK
typedurls	OK
uninstall	OK
userassist	OK
usersids	OK
version	OK