tekliftopla android app upgrade

Upgrade tekliftopla android app to;
-update all deprecated methods, classes including AsyncTasks class, phppost and etc.
-update Google & Facebook login API's & SDK's to latest vesions
-remove all redundant castings, unnecessary calls, unused import statements, fields and etc.
-clear all warnings generated in latest version of Android Studio

A running current version of the app can be found in Google Play store
https://play.google.com/store/apps/details?id=appinventor.ai_asgulec.tekliftopla&hl=en&gl=US

Current version's code and other required information will be supplied.