Merge remote-tracking branch 'upstream/master' into sort-raisehand-better

...igbluebutton/core/apps/presentation/PresentationApp.scala

...s/presentation/redis/PresentationEventRedisRecorder.scala

bigbluebutton-client/.gitignore

bigbluebutton-client/locale/az_AZ/bbbResources.properties

bigbluebutton-client/locale/bg_BG/bbbResources.properties

bigbluebutton-client/locale/bn_IN/bbbResources.properties

bigbluebutton-client/locale/ca_ES/bbbResources.properties

bigbluebutton-client/locale/cs_CZ/bbbResources.properties

bigbluebutton-client/locale/cy_GB/bbbResources.properties

bigbluebutton-client/locale/da_DK/bbbResources.properties

bigbluebutton-client/locale/de_DE/bbbResources.properties

bigbluebutton-client/locale/el_GR/bbbResources.properties

bigbluebutton-client/locale/en_US/bbbResources.properties

bigbluebutton-client/locale/es_ES/bbbResources.properties

bigbluebutton-client/locale/es_LA/bbbResources.properties

bigbluebutton-client/locale/et_EE/bbbResources.properties

bigbluebutton-client/locale/eu_ES/bbbResources.properties

bigbluebutton-client/locale/ff_SN/bbbResources.properties

bigbluebutton-client/locale/fi_FI/bbbResources.properties

bigbluebutton-client/locale/fr_CA/bbbResources.properties