Improved the context menu in the cluster table, added hotkeys.
Fixed inaccuracies when deleting duplicates.
Improved and accelerated the algorithm for removing the occurrence of rows in each other.
Added the function of searching for implicit duplicates.
Added the function of searching for implicit duplicates taking into account morphology.
Added the function of searching for the occurrence of arc words in a friend.
Added hints to all buttons on the control panel.