Previously, we had a silent failure of the dbus call to "reloadConfig"
which turned out to be a signal and not a method that we can call. To
reload effects, we need to manually call dbus to load and unload each
individual one. A similar situation exists for scripts, except that we
only unload scripts through individual calls, and call `start` to load
all of the enabled scripts at once.
We can use the placement mode setting in KWin to bypass the need to "maximize" after the window opens, KWin does this for us.
We keep the kwin maximize script to enforce docked mode changing window maximization (since the policy only affects new windows).
Upgrading on pmOS from Plasma 5, where we used to ship custom configs seems to have kwin get stuck having the kdecoration plugin disabled. Manually enable it.
