Switch to the new connect() API
Summary:
Switch to the new connect API with removal of the SIGNAL and SLOT calls
This required the following changes
- Replace the optional parameters slots by explicit ones to manage the overload conflicts
- Additional disconnects in destructors for LokalizeMainWindow and TranslationUnitTextEdit
Reviewers: Localization, aacid, ltoscano, shaforostoff, mlaurent
Subscribers: broulik
Tags: Localization
Differential Revision: https://phabricator.kde.org/D14854