xfitman: try to get window title even harder

(cherry picked from commit 54770995b53843e11c9b5131140dfd504b390c28)
globalkeyshortucts: fix segfault and other bugs in daemon

Segmentation fault happened if a deleted shortcut was triggered. Also
shortcuts were never unregistered and objects were never freed...
(cherry picked from commit 697e6e494e8cbd9547e50e797153b778ee47a128)
RazorMount: Fix rounding

Fixes #522
(cherry picked from commit e4276d199393d7d1c34c675fee135b08b13c0d1f)
initial fix for #520 XdgDesktopFileCache::getDefaultApp cache wrong behavior

(cherry picked from commit 07674d536e22f399918ffb3fb230cea1c7a8f198)
Update translations