adds core data methods and object model
TTWorkPeriod -> NSManagedObject WorkPeriod
commented out ttworkperiod
add project controller
sign off for 07/17, todo: fix core data issues
commit user state to switch to master branch
commit to change to master branch
ttproject and ttworkperiod -> project and work period (NSManagedObjects)
projects add to list view
work periods save to core data with project
code cleanup to remove commented out code
started on trying out fetchedresultscontroller but stopping for now
ignore xcuserstate