Do not repack all tiers when a new tier is added.

git-svn-id: https://svn.code.sf.net/p/genoviz/code/trunk@14904 80d5a9c2-7d8c-4c9f-9369-4e03bca4d2bd
Removing unnecessary null check of axis tier glyph.

git-svn-id: https://svn.code.sf.net/p/genoviz/code/trunk@14905 80d5a9c2-7d8c-4c9f-9369-4e03bca4d2bd
Moving do selection method to seq map view.

git-svn-id: https://svn.code.sf.net/p/genoviz/code/trunk@14906 80d5a9c2-7d8c-4c9f-9369-4e03bca4d2bd
Use interface in cyto band glyph.

git-svn-id: https://svn.code.sf.net/p/genoviz/code/trunk@14907 80d5a9c2-7d8c-4c9f-9369-4e03bca4d2bd
Merge remote-tracking branch 'upstream'