latest smyth tagset
add dropdown menu for treebank creation (for multiple possible editors)
cleaning up tools a bit - normalizing structure of the config file, allowing multiple tools of a single type, moving business logic for creating tool links into the tools library
clearing relations on renumber should be default behavior
fixing broken treebank editor url
fixing broken alignment editor url
fixing a few tool link references
forgot to update DOC to IDENTIFIER placeholder in prior commits for tools rework
ok not awake yet, prior fix should have been to send identifier to link_to instead of replacing placeholder in url
merged latest from perseus_shibboleth