preferences now uses toolbar
added OldPrefs class for android < 11 prefs
added more preference summary settings
working on warfarin tablet pref
fixed warfarin dosing settings and refactored
added default inr target setting summary
setting fragment shows actual settings -- complete
mostly duplicated MyPreferenceFragment code in OldPrefs (oh the joy of supporting early Android)
day calculator and interval converson have toolbars
mdpi icon now based on new svg small version of icon
toolbar on qtc calc and body wt calc
all calculators have toolbar.  Need to fix color styles
changed padding to 16dip in many (but not all) layouts
tweaked some colors and layout margins
fixed most of the java code to allow toolbar
most layouts converted to use toolbar
all toolbars implemented
deleted activity_procedure_list.xml
Merge branch 'feature/materialdesign' into develop