fix(App): clean some imports

ui/modules/Common/Styles/Form/ActionBarStyle.qml

 pragma Singleton
-import QtQuick 2.7
+import QtQml 2.2
 
 // =============================================================================
 

ui/modules/Common/Styles/Form/Placements/FormLineStyle.qml

 pragma Singleton
-import QtQuick 2.7
+import QtQml 2.2
 
 // =============================================================================
 

ui/modules/Common/Styles/Form/Placements/FormTableLineStyle.qml

 pragma Singleton
-import QtQuick 2.7
+import QtQml 2.2
 
 // =============================================================================
 

ui/modules/Linphone/Styles/Contact/ContactStyle.qml

 pragma Singleton
-import QtQuick 2.7
+import QtQml 2.2
 
 // =============================================================================
 

ui/views/App/Styles/Calls/Dialogs/CallSipAddressStyle.qml

 pragma Singleton
-import QtQuick 2.7
+import QtQml 2.2
 
 // =============================================================================
 

ui/views/App/Styles/Calls/Dialogs/CallTransferStyle.qml

 pragma Singleton
-import QtQuick 2.7
+import QtQml 2.2
 
 // =============================================================================
 

ui/views/App/Styles/Main/Assistant/CreateLinphoneSipAccountStyle.qml

 pragma Singleton
-import QtQuick 2.7
+import QtQml 2.2
 
 // =============================================================================
 

ui/views/App/Styles/Main/Assistant/UseLinphoneSipAccountStyle.qml

 pragma Singleton
-import QtQuick 2.7
+import QtQml 2.2
 
 // =============================================================================
 

ui/views/App/Styles/Main/Dialogs/AuthenticationRequestStyle.qml

 pragma Singleton
-import QtQuick 2.7
+import QtQml 2.2
 
 // =============================================================================
 

ui/views/App/Styles/Main/Dialogs/ManageAccountsStyle.qml

 pragma Singleton
-import QtQuick 2.7
+import QtQml 2.2
 
 // =============================================================================
 

ui/views/App/Styles/Main/MainWindowStyle.qml

@@ -2,7 +2,6 @@ pragma Singleton
 import QtQuick 2.7
 
 import Colors 1.0
-import Linphone.Styles 1.0
 import Units 1.0
 
 // =============================================================================

ui/views/App/Styles/Settings/Dialogs/SettingsSipAccountsEditStyle.qml

 pragma Singleton
-import QtQuick 2.7
+import QtQml 2.2
 
 // =============================================================================
 

ui/views/App/Styles/Settings/Dialogs/SettingsVideoPreviewStyle.qml

 pragma Singleton
-import QtQuick 2.7
+import QtQml 2.2
 
 // =============================================================================
 

ui/views/App/Styles/Settings/SettingsAudioStyle.qml

 pragma Singleton
-import QtQuick 2.7
+import QtQml 2.2
 
 // =============================================================================
 

ui/views/App/Styles/Settings/SettingsWindowStyle.qml

 pragma Singleton
-import QtQuick 2.7
+import QtQml 2.2
 
 import Colors 1.0
 

ui/views/App/Styles/SplashScreen/SplashScreenStyle.qml

 pragma Singleton
-import QtQuick 2.7
+import QtQml 2.2
 
 // =============================================================================