part 1 - refactoring changes

[prxtik]

1. Introducing an explaining variable - long timeUntilExpiration in InsertTaskSync.java because it simplifies the expression and makes it more understandable.
2. Renaming the variable - tid to taskID in ExecuteTask.java to give a much better context.
3. queryStatus() in ExecuteTask.java was a long method. Therefore, I decomposed it into different methods.

[BrianNichols]

This pull request contains a lot of unnecessary formatting changes.