first stab at the new x-axis with sticky and rolling midnight day labels
hide sticky label on *both* sides of midnight to avoid overlap
align sticky label with pool labels
give the new top x-axis a little more 'breathing room'
make date label match header bar
make date label lighter (and refactor colors a bit on the way
Merge branch 'master' into jebeck/barbiter-date-option
during click-and-drag, reduce opacity of sticky date label
make date labels match header date label
additional tweak to prevent sticky label and midnight-anchored label overlap
oops, have to actually *add* the moment dependency
require exact versions of dependencies
Merge pull request #151 from tidepool-org/jebeck/barbiter-date-option

new daily chart x-axis with sticky label on left