[REQUIREMENT] Code clean up - improve logs

[jessiejuachon]

Is your feature request related to a problem? Please describe. Logs are written with hardcoded class and method names. For example:
SgtnClient.logger.debug "[Translation.getString]..." or SgtnClient.logger.debug "[Translation][getString_p] ..." where "Translation" is the hardcoded class name and "getString" and "getString_p" are hardcoded method names.

Describe the solution you'd like Class names and method names are not hardcoded: SgtnClient.logger.debug { "#{class.name}.#{__method__} ..."