added open service logs to logs page (#951)

* added open service logs to logs page
* redesign of log saving buttons
* hide service logs buttons for mobile platforms
* refactoring: moved logger to common folder
* feature: added the ability to enable logs to the start screen

client/amnezia_application.cpp

@@ -164,7 +164,7 @@ void AmneziaApplication::init()
     bool enabled = m_settings->isSaveLogs();
 #ifndef Q_OS_ANDROID
     if (enabled) {
-        if (!Logger::init()) {
+        if (!Logger::init(false)) {
             qWarning() << "Initialization of debug subsystem failed";
         }
     }