added the beginnings of the indicator display code.

this currently runs, but doesn't dereference referenced content (e.g. items that are referred to via @refid)
fixed a problem where I commited a version of stix-common.xsl that didn't have all the changes saved.  this version runs.

(previous version was calling nested compositions by named template which didn't exist.  it is now calling template by pattern matching.)
the indicator operands (in composite indicators) are now "expandable"
(they are clickable to expand, but the content for expansion isn't there yet)