[iOS][Bug] fix all bug from review 

- Trello: https://trello.com/c/K2jvGRMP/17-review-all-features

Bug List: 
- Show splash screen for all device
- Share Facebook button wrong position in iPhone 6 or later
- Disable Landscape
- Change link to short link
- Change text to "via @sfbaseapp (http://twitter.com/sfbaseapp)"
- Not show link if address is too long without space