dangling link functionality for terms

[kohlhase]

In the SMGloM we have the \term macro for dangling term references. In the OMDoc this has the form

<omdoc:term class='dangling-term-link'>foo</omdoc:term>

where foo is a NL phrase. The idea is that this is to be replaced by a proper term reference of the form

<omdoc:term role='definiendum' name='#name' cd='#theory'>foo</omdoc:term>

eventually.
In the web interface, this should work as a wiki-style dangling link. I imagine that clicking on the omdoc:term of class dangling-term-link would trigger the creation of a new glossary module. When that is written, we an fill in #theory (the name of the new module) and #name (one of the symbol names in there) and create the final term reference.

The \term macro has an intermediate form

<omdoc:term class='dangling-term-link' cd='bar'>foo</omdoc:term>

where the cd is already given. Then the dangling link behavior should not create a new module, but go into edit mode for the module specified in the cd attribute (and allow the addition of a symbol).

I am assigning this to Constantin, since this is editing, but @m-iancu and @RochauD should also have a look and consider it.