some restructurization
no more csv - used json instead
make main() less complex
lock/unlock bookmark file
add ID's to bookmarks
Added ignore-case search option; some old, useless code removed
changes to all operation functions
rename "selection" to "results", suppress subprocess output
Allow specification of initial visit_count when adding a new bookmark
searching/filtering/sorting functionality moved from BookmarkManager to View
version bump
search by ID/IDS
Merge branch 'json_instead_of_csv' into develop