added a little translation (#1037)

* Update lv.json

* Update hotkeys

* Update about

* Add account un core-plugins

* add third-party-plugin

* add mobile-toolbar & editor & link-suggestion & spellcheck & menu & heading-suggestion & print-modal & link-popover

* add interface un formatting un empty-state un menu

* add tooltip un start-screen un starter-content un drag-and-drop un window un start-up

* add dialogue un menu-items un plugins un search

* add ,