fix: remove most file-graph references from frontend and electron

- Remove references to old files under logseq/ e.g.
  logseq/version-files
- Remove flashcard commands and translations that applied to file graph flashcards
- Remove unused electron and frontend events
- Remove timetracking config which was for file graphs

src/main/frontend/handler/property.cljs

@@ -1,5 +1,5 @@
 (ns frontend.handler.property
-  "Property fns for both file and DB graphs"
+  "Property fns"
   (:require [frontend.db.model :as db-model]
             [frontend.handler.db-based.property :as db-property-handler]
             [frontend.state :as state]))