Added aptdaemon status icons combining the system-installer and action icons

symlinked wireless status icons from the wireless device icons
Corrected nm-status icons
Proposing changes to recent commit of nm-signal status icons
These seem more in-line with the battery icons
Merge pull request #22 from pacomaro/master

Corrected nm-status icons / Proposing second corrected version
Merge remote-tracking branch 'nitrux/master'