[Applet]Fix dimensions of traffic Monitor
Summary:
Remove top margin.
Workaround to get paintedheight for label. (Undefined or paintedheight
does not work.)
Base plotter's top margin on labels size.
Add small spacing at the bottom.
Add 0 value.
Align labels to the right.
Test Plan:
Before
After
Reviewers: Plasma, VDG, jgrulich, ngraham
Reviewed By: VDG, jgrulich, ngraham
Subscribers: ngraham, broulik, plasma-devel
Tags: Plasma
Maniphest Tasks: T10470
Differential Revision: https://phabricator.kde.org/D27391