Add a kapptemplate for Plasma Wallpaper

Review Request #128594 - Created Aug. 3, 2016 and submitted

Friedrich W. H. Kossebau
kdeframeworks, plasma

This template should allow people to get a basic working wallpaper plugin within minutes.

Patch (in separate commits) also
- updates the READMEs of the plasmoid templates to point to correct QML2 wiki pages.
- mobves the plasmoid and wallpaper templates into own toplevel category "Plasma/", out of "KDE/", given this is a platform target of its own

Installed the template, then created a new wallpaper plugin using kapptemplate and following the README, then selected in wallpaper config, incl. editing the plugin config by entering a new text.

Sebastian Kügler
Friedrich W. H. Kossebau
Review request changed

Status: Closed (submitted)

Change Summary:

Submitted with commit d4f10cd67e8c4811d3a39fbd44e1f16655c9b2fc by Friedrich W. H. Kossebau to branch master.