Until the recent markdown upgrade and changes to artifact links, an artifact link like [bar](foo) would just render bar with no brackets.  This was useful to keep wiki text looking clean.  But now [bar](foo) renders as a link with text [bar].  Let's restore that behavior.  A simple artifact link like [foo] should still render with brackets though.
For example, see the links at the bottom of https://sourceforge.net/p/allura/wiki/Allura Wiki/
Created #218: [#5315] artifact links shouldn't show brackets if text is specified (1cp)
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#5315Closed #218. Branch
42cc_5315