Add UI for reset passcode, logout, security checks

Begin storyboarding for system monitor
Merge pull request #3 from project-imas/master

Update README.md
add in-app log, infrastructure (but no implementation) for System Monitor
Merge branch 'UI' of github.com:project-imas/sentry-app into UI
fix issue with system monitor crashing; add dispatch timer for filtering
Merge pull request #4 from project-imas/master

merge master to UI (readme updates)
add confirmation alert box to reset passcode button
Merge branch 'UI' of github.com:project-imas/sentry-app into UI
add system monitor GUI and filter settings encryption

logging is still a work in progress
add notifications
Merge pull request #6 from project-imas/UI

Add UI