Warnings no build

[arthurbailao]

Alguns warnings que devemos corrigir:

• Dito.kt: (86, 16): Condition 'apiKey != null' is always 'true'
• Dito.kt: (86, 34): Condition 'apiSecret != null' is always 'true'
• DitoMessagingService.kt: (43, 19): Unnecessary safe call on a non-null receiver of type Intent
• NotificationOpenedReceiver.kt: (33, 43): Type mismatch: inferred type is String? but String was expected
• gsonSerializer.kt: (12, 34): Parameter 'typeOfSrc' is never used, could be renamed to _
• gsonSerializer.kt: (25, 45): Parameter 'context' is never used, could be renamed to _