--First steps in order to support mulitple Tasks
applets in the same dock and panel.
--Step1: migrate values from Containment to Task
applet.
--Step2: deprecate Task applet options that are
found in containment
--Step3: provide multiple dynamic Tasks tabs in
settings
--the user can add a previewsDelay value in ms in the
latte plasmoid General settings which can be found
in a layout file in order to change the delay which
a preview is needed to be activated. Values lower
than 150ms are ignored because they break the previews
experience by providing faulty previews