+ add support of pid files with interface name to provide compability
with netctl module
* change default wpa_sup ctrl paths
* optimization of wifi calls
+ add signals to lineEdits
* rewrite errorwindow class to static methods
* replace mask in ip lineedits to validators (fix#34)
* fix advanced lines
* move AdHoc and Hidden options to advanced (#28)
* fix default wpa_supplicant conf path (#28)
* update toolbars to #2
* replace General settings section to Common (see http://doc.qt.io/qt-5/qsettings.html#Format-enum)
