edited formatting style of Logic.java, Parser.java,
                           ParseTime.java, UserInput.java,
                           RepeatedTask.java, TaskList.java
                           NattyTest.java, StorageTest.java
 - formatted switch statements
 - added braces for single-lined conditionals
 - edited spacings for split lines
 - adding spacings between operators
 - added spacings before parentheses