UPDATES: iOS Modals and Layout

*iOS Layout: Update page width to be same width as viewport. Removed excess padding on #event-card (iPhone) and #search-wrapper (iPad). Addition tweaks for device specific layout.
*iOS Modals: position fixed for iPhone and position absolute for iPad. ADD: internal scrolling for iPhone modals.

Signed-off-by: Chris Satchell <chrissatchell@gmail.com>