Unotes - notes with tags

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- tags :: supported filtering by tag exclusion (add feed tag "-example" to hide notes with tag "example")
- search :: when search, found words are highlighted
- start screen :: added setting to configure it
- "Edit Note" :: added "checkbox-item" to rich-text-panel
- markup :: added marker ( `::` )
- "Quick add" :: improved interface, added tile element to create notes
- "Notes" :: improved compact-mode
- "Edit Feed" :: added alphabetical order