Projects are now sortable; styling improvements

NEW: Projects are now sortable by DnD
CHG: various styling and colour tweaks
FIX: issues with raw task reformatting
FIX: correct task count now returned when searching
FIX: issue with empty projects hidden in project sidebar
NEW: show real project header when viewing only one project (allows
in-place editing)
FIX: problem where tags was inserted inside itself instead on replacing,
on page update
FIX: hover highlight on indicators
FIX: quote marks incorrectly formatted