Fix 'Unnecessary backslash in expression'
Fix 'Single quoted docstring'
Fix 'Unused local variable'
Dont print 'You should restart' when there is only hidden applications
Fix sudden Gentoo #new problem
Fix 'Trailing semicolon'
Fix 'deprecated sets module'
Fix 'too broad exception'
Add missing constructors
Suppress warning that constructor doesn't call base constructor
Fix 'Trailing semicolon'
Fix 'Performed equality comparsion with None'