Revert first-day-of-week changes

This is the wrong approach, there's already code in place for it but
it is user-input driven (explicit "First day of week" option). If set
to something other than Sunday, these changes make everything shift
twice as much :(

Revert "alarms: Fix the labels on repeat days"

This reverts commit 19b0da1c.

Revert "deskclock: internationalize repeat days layout"

This reverts commit 474327d7.

More CYNGNOS-1822

Change-Id: I9980d9dc7bc7403808a2120404831c5d43f2a403