Merge pull request #1646 from goblincoding/docupdates

Updated doc strings.
Add Autocomplete to preferences_execution, Add missing DocStrings
Merge pull request #1648 from juancarlospaco/feature/preferences_execution

[preferences] Add Autocomplete to preferences_execution, Add missing DocStrings
Showing only the handlers combo
Fixing split assistance height
Fixing icons in find and replace
Merge pull request #1650 from diegosarmentero/master

Fixing icons, split size, and combo file
refactoring plugins and working on plugins store
changed plugins store string
PARTIAL Adding Show/Hide Tabs and Spaces to View menu
huge improve in performance when working with splits
support undock editor
explorer tabs improved
fixing garbage collector issue for undock editor
adding window title
Moving setting changing code from tools_dock to main_container
Adding Show/Hide Tabs and Spaces to View menu
some improves in split assistance and close split
fix combo editor, only close childs with esc
Fix for #1582, Added Translations, Add Missing DocStrings