Don't finish nav drawer fragments on error.

briar-android/src/org/briarproject/android/blogs/FeedFragment.java

@@ -125,7 +125,6 @@ public class FeedFragment extends BaseFragment implements
 					@Override
 					public void onExceptionUi(DbException exception) {
 						// TODO: Decide how to handle errors in the UI
-						finish();
 					}
 				});
 	}
@@ -151,7 +150,6 @@ public class FeedFragment extends BaseFragment implements
 					@Override
 					public void onExceptionUi(DbException e) {
 						// TODO: Decide how to handle errors in the UI
-						finish();
 					}
 				});
 		list.startPeriodicUpdate();
@@ -214,7 +212,6 @@ public class FeedFragment extends BaseFragment implements
 					@Override
 					public void onExceptionUi(DbException exception) {
 						// TODO: Decide how to handle errors in the UI
-						finish();
 					}
 				}
 		);

briar-android/src/org/briarproject/android/privategroup/list/GroupListFragment.java

@@ -114,7 +114,6 @@ public class GroupListFragment extends BaseFragment implements
 					@Override
 					public void onExceptionUi(DbException exception) {
 						// TODO handle error
-						finish();
 					}
 				});
 	}
@@ -169,7 +168,6 @@ public class GroupListFragment extends BaseFragment implements
 					@Override
 					public void onExceptionUi(DbException exception) {
 						// TODO handle this error
-						finish();
 					}
 				});
 	}