bool start: set it to true if this date is the beginning of the search, if it's the end, set it to false

populate the pop-up menu of the mountman tool-button with actions

callback function for libisofs */

checks if 'node' needs to be bumped-up the ranking list and does it if needed

removes a node from the list, but doesn't free memory! note: this will be buggy in case the list becomes empty (which should never happen)

called from SLOTS to begin the renaming process