- tibet:strings attribute
    [[%%stringkey]] lookup in expressions.
    This gets expanded into [[%%<tagName>:stringkey]]

    This 'looks up' the parent chain for elements with a `tibet:strings`
    attribute. If it doesn't find an entry for that key, it continues up the
    chain.

- tibet:service with localdb problem.

    - tibet:service should be a class cluster.
    - some logic probably needs to move up from http:service into tibet:service

+ what to do about the 'exist:' namespace issue.

    + Need to leverage 'booleanAttrs' mechanism

+ Automatic insertion of @namespace() rules (WONTFIX)

+ 'helper' methods could follow the same mechanism we have in the 'eval()'
portions of the form stuff
    = Tweak the stuff built into binding to allow parenthesized expressions

