lighter weight fonts in pool labels
remove parens and switch from U to u for units
fix variable size of 'u/hr' in basal tooltips
add some min and max widths in bolus/wizard tooltip layout where needed to prevent squishing
get tests to pass with new quick bolus test page data, changes to pool labels
Merge pull request #165 from tidepool-org/jebeck/cosmetic-fixes

native tooltip bugfixes & small cosmetic fixes