added saveFile methods to Files (T-6742)
Merge branch 'master' into T-6742_save_file_bytes
reverted formatting
Merge pull request #48 from Backendless/T-6742_save_file_bytes

T 6742 save file bytes
Fixed error reporting (used to hide internal exception).
Fixed a problem with reversed class-to-table mapping. Backendless.Data.of( X.class ) was not taking into consideration that X.class could be mapped to "foo".
fixed for saving files with specified content. Changes signature of cancel() method in Messaging. Responder used to take boolean, now it takes MessageStatus
Merge branch 'master' into T-7281_related_meta
added comments