Updated slovak translation
Disable history action while history is frozen

https://bugzilla.gnome.org/show_bug.cgi?id=704184
libview: Fix Return key bidings

Do not use the helper function for keypad keys since Return doesn't have
a key un the keypad.

https://bugzilla.gnome.org/show_bug.cgi?id=704154
Fix the cache size unit used in gsettings documentation

Use MiB instead of Mb.

https://bugzilla.gnome.org/show_bug.cgi?id=704155
ev-page-action-widget: Update the page number when unfocused

https://bugzilla.gnome.org/show_bug.cgi?id=704138
ev-zoom-action-widget: Update the zoom level when unfocused

https://bugzilla.gnome.org/show_bug.cgi?id=704138
Updated German translation