Submit to AppCenter about js-test

[Timecraft]

This also requires updates to com.github.timecraft.jstest.appdata.xml.in to have version information, release notes, features, etc.

[Timecraft]

As a list of what needs to be done for this:

Issue #	Reason
#4	Significantly reduces the workload to make new releases Completed
#5	We need an icon for the launcher Completed
#7	Respect user's preferences for various purposes. See issue for more detail Completed
#9	We can't ship an application if it can't find its own icon Completed

[Timecraft]

Well, it's been submitted, but I'm not going to close this until it has been released

[Timecraft]

As a list of what needs to be done for this:

Issue #	Reason
#4	Significantly reduces the workload to make new releases Completed
#5	We need an icon for the launcher Completed
#7	Respect user's preferences for various purposes. See issue for more detail Completed
#9	We can't ship an application if it can't find its own icon Completed
#8	#64 - We cannot use Code or Gedit's GSettings, so we must use GSettings of our own design

[Timecraft]

As of 2/12/2020, JS Test has been released to AppCenter!

As of the time of this writing (2/12/2020), this link does not lead anywhere