ChannelModifierEditor: fixed position of newly created handler
Show Manager: it is now possible to lock/unlock items
Show Manager: added lock/unlock action to items' context menu

Updated translations
Audio Editor: it is now possible to select a specific audio card for playback

Updated translations
UI: do not show project error log when loading from memory
DocBrowser: added a button to close the window. Set a default size

Doc: espose method to clear the error log
Updated translations
Monitor: set a default size the first time