Editing Session info (times) results in incorrect information and ambiguous status

### Goal:
Coaches need to be able to easily modify session times for accuracy and see these changes reflected in the UI

### Issues:
1. Sometimes after changing either Start or End time, the view continues to show both old values and even though a reminder appears to "Pull Down to Refresh" its just not intuitive and they appear to not be updated
2. Sometimes the incorrect values are saved/displayed after refresh (I chose 3pm and 5pm) and it appears here as 11am (11:00) and 1pm (13:00)
3. The UI is not easy to read and understand and Coaches have to make a serous effort to get through it

### Improvement Requests:
1. Show the new values in the UI after editing along with a red (sync/refreshj) button
2. Show the team name in the dialog that shows the changed values
3. Improve the UI entirely with options like: [1hr][2hr] and start time [11][12][01][02][03][04][05] or something like that

### Acceptance Criteria:
Session Times can be changed within reasonable limits and are displayed accurately in the app as well as stored in the system.

- [ ] Time Zone is considered identical between App and System and does not alter the times entered
- [ ] Time is displayed in _ALL_ dialogs in the same 12 hour AM/PM format e.g. "4:00 PM"
- [ ] The end time is _REQUIRED_ to be greater than the start time
- [ ] _Duration_ is shown in the Summary
- [ ] Most recent start and end times for that team are provided, by default, when a New Session is created