Fixing list of loaded sym.

git-svn-id: https://svn.code.sf.net/p/genoviz/code/trunk@14961 80d5a9c2-7d8c-4c9f-9369-4e03bca4d2bd
Minor refactoring and adding new method.

git-svn-id: https://svn.code.sf.net/p/genoviz/code/trunk@14962 80d5a9c2-7d8c-4c9f-9369-4e03bca4d2bd
Adding method to add dummy child to tier glyph.

git-svn-id: https://svn.code.sf.net/p/genoviz/code/trunk@14963 80d5a9c2-7d8c-4c9f-9369-4e03bca4d2bd
Merge remote-tracking branch 'upstream'