Fix not showing ListFragment in Android 2.3

Confirmed device:
 Xperia arc(Android 2.3.4)
Merge branch 'hotfix/notShowingListFragment'
Fix a crash bug that ProgressDialogFramgent#dismiss() in onLoaderFinished() in Android 2.3

Use ProgressDialogFragment#dismissAllowingStateLoss() instead of
ProgressDialogFragment#dismiss()

Confirm device:
 Xperia arc(Android 2.3)
Merge branch 'hotfix/crashProgressDialogWithLoader'
Support min SDK 7
Merge branch 'feature/supportMinSdk7'
Release ver.1.1.0