removing extra ; in custom method template component

Change-Id: I10700a58ce8861e0256b42cfd7dcda990851c848
BUG: fix return by reference of temporary for active custom casts

Change-Id: I74864d8f59f9ae9be230c985614a477fea1b3e72
Restore HasLabel method to LabelStatisticsImageFilter

Adding HasLabel as custom method which accesses the m_Labels to
determine availability of label.

Change-Id: Ia1ee05831b95601bfbced32fe05b4ea9b4d1e49d
Move LabelStatistics.Basic test to self named file

Moving and renaming test to file for LabelStatistics test file.

Change-Id: I331ff508f93c365e53dc5b6a44dff6d0fe88b56c
Improve LabelStatisticsTest

Added more testing for HasLabel custom method, changed the expected
behavior for the Delete Command event.

Change-Id: Ibee249af514873450922ed2aa3c4cfe33e0fb01b
Merge topic 'SIMPLEITK-490_Uset1functionForLabelStatisticsImageFilter' into next

560f32d1 Improve LabelStatisticsTest
89b209bd Move LabelStatistics.Basic test to self named file
73dc04a8 Restore HasLabel method to LabelStatisticsImageFilter
d332873c BUG: fix return by reference of temporary for active custom casts
860d4c63 removing extra ; in custom method template component