Updating sorting logic in UserPreferencesRepository

[anidhamal]

Issue

Fixes #31

Description

• Inside enableSortByPriority / enableSortByDeadline methods , checking if the argument is true and SortOrder is already BY_DEADLINE_AND_PRIORITY, perform no updates in preferences.

Videos

Before	After

[Arrowsome]

Instead of using if blocks, you could use when statement, which IMO makes the code more clear, example for enableSortByPriority method:

if (enable) {
  when (currentOrder) {
    SortOrder.BY_DEADLINE -> SortOrder.BY_DEADLINE_AND_PRIORITY
    SortOrder.NONE -> SortOrder.BY_PRIORITY
    else -> return@edit
  } else {
    // same as before
  }
}