Restored the code to add actions from the hidden menu back to the main window.

So that if Menu Button is hidden (or the whole toolbar is hidden) all
the actions would still work, including the one to show the main menu back.

One of the possibilities when the Menu Button is hidden is when not all
toolbar buttons fit into winow and are being automatically hidden.
Lupdate all the translations.
Italian translation updates by Daniele Di Pisa.
Russian translation update.
Update Argentinian Spanish translation
Update locale/lt_LT.ts
Better keyboard support in Dictionaries tab:

1. Pressing Down Arrow allows to jump from the Quick Filter to the dictionaries list.
2. Navigating through dictionary list via keyboard (Up/Down) results in dictionary details
   to be shown on the right. Previously, only mouse clicks updated the dictionary info.
Merge pull request #153 from embar-/patch-1

Update locale/lt_LT.ts
Updated a year to 2013.
Year-related translation updates by Daniele Di Pisa.
Make sure that UI mode and Always On Top flag are preserved on config changes.