Conflicts:
	i18n/en.i18n.json
	i18n/pt.i18n.json
	packages/rocketchat-lib/i18n/en.i18n.json
	packages/rocketchat-lib/i18n/pt.i18n.json
	packages/rocketchat-lib/server/methods/setUsername.coffee
	packages/rocketchat-lib/server/models/Settings.coffee
	packages/rocketchat-lib/server/startup/settings.coffee
	packages/rocketchat-ui-admin/admin/admin.html
	packages/rocketchat-ui-login/username/username.coffee
	packages/rocketchat-ui-master/master/main.html
	server/lib/accounts.coffee

Custom webhook scripting improvements

corrected Meteor Error message

corrected Meteor Error message of leaveRoom method

just corrected the way it throws Meteor.Error to common "style" in getUsernameSuggestion method

just made this similar to other methods

Upload to file system support

removed Meteor Error copy-pasted problem

removeAvatar -> saveUserProfile

OTR - Rocket.Chat version