Add Log class
add Log.v method
format
add logging to CreateFoodAndUploadTask
Add null checks
Add onDowngrade DB
add implement Upload Task implementation
downgrade gradle
downgrade gradle
refactor
add ids for edits on Login screen
Merge remote-tracking branch 'origin/network-api-client' into upload-task

Conflicts:
	src/main/java/com/eucsoft/foodex/MainActivity.java
Merge branch 'network-api-client' into upload-task

Conflicts:
	src/main/java/com/eucsoft/foodex/MainActivity.java
call upload NetworkAPI
Food object refactoring
Merge branch 'network-api-client' into upload-task

Conflicts:
	src/main/java/com/eucsoft/foodex/db/model/Food.java
Food -> FoodPair
refactoring
added FoodPairTest
Tests refactoring
update build and tests run to make it runnable on Travis
return ERROR if Exception
add .m2 to cache