fix(app): restore getActiveNav api

restore getActiveNav api

chore(generator): remove ionicPage for now (ionic-team#12347)

docs(events): fix syntax error (ionic-team#12317)

Need to access member using `this` keyword outside constructor

fix(select): _inputUpdated should not be called manually

fix(rtl): use multi direction in order to override the default ltr

fix(themes): change default app-direction

fix(input): slightly longer delay for autofocus (ionic-team#12037)

chore(gulp): remove bonjour service

fix(label): set the ios variables to null to avoid styling

fixes ionic-team#11631

docs(alert): imported AlertController in usage example (ionic-team#11567

)

Added an importation for use the alert controller on line 52.