fix bug that was causing the map of surf spots to be downloaded again every time the initial view was loaded

- added usingUserDefaults flag being set back to false
add view constraints for 6+ in portrait
add background colors to spot cells that vary based on the height of the spot
remove scroll indicators from first beta build
modify tide download method to download the next 24 hours of tides, instead of simply today's tides
- refactored download method to download the next 24 hours of data instead of simply today's data. May extend this code to download the same for other information as well.
add tide display that is true
- gave cells enough logic to take the list of tide heights and set the labels correctly for humans to read
Merge pull request #1 from sahandnayebaziz/user-interface-0.1

User interface 0.1