Added a prefs for outline visibility (fixed #1680)
Improve behavior of expanded nodes in files view vs search (fixed #1649)
Store prefs only in Outline
Merge pull request #1712 from dinhviethoa/1680-prefs-outline

Added a prefs for outline visibility (fixed #1680)
Always use monokai theme: fixed #1713
Merge pull request #1716 from dinhviethoa/1649-expanded-state-vs-search

Improve behavior of expanded nodes in files view vs search
Merge pull request #1721 from dinhviethoa/1713-always-use-monokai

Always use monokai theme: fixed #1713
Resolved more conflicts