applet: show more info for when no manual profile available
Commit 1:
applet: fix missing power profile label when using tlp
Having the label empty looks off and imo a little broken because current value information is shown in this place everywhere else in the battery and brightness applets.
Use a corresponding label when the profile set is automatic.
Commit 2:
applet: show informational message when no profiles available even though ppd is installed
Continuing to just show "not available" after the user followed the instructions to install ppd is a little confusing. Add a label confirming that profiles are not supported on the device so at least the user knows it's not some sort of misconfiguration.