Adding link to procedural interface for manually written filters

Change-Id: I5630ee17bd66d691d260bc4ed12da35560d6b2c3
Adding links to procedural interface from classes for doxygen

Change-Id: I1963751dc7bfc232a793fb911e0cc67e6d912985
Remove extra  doxygen comment in filter templates.

Change-Id: Ib4a2e5a2034f597e6da5af4f7d41a486534a9884
Trim ImageFilter from Doxygen link to procedural method

Change-Id: I8ec4f48e51ebac0c7d8de74c553da01b0e438003
Fix spelling for procedural.

Change-Id: I4ddfa7d98ad02dd9f766db0727fa65164702d328
Merge topic 'SIMPLEITK-384_FixDoxygenProcedualLinkFromClass' into next

d0c16e6 Fix spelling for procedural.
4276117 Trim ImageFilter from Doxygen link to procedural method
e2d8dfa Remove extra  doxygen comment in filter templates.
2e18bfd Adding links to procedural interface from classes for doxygen
6c641b4 Adding link to procedural interface for manually written filters
Updating copyright years in notice.

Change-Id: I6b6c2b580565a90bb90025b931e435c407fe3e58
Merge topic 'SIMPLEITK-377_UpdateNOTICE' into next

2184951 Updating copyright years in notice.