Renders a Bootstrap timeline widget with grouped, icon-decorated entries.
Timeline — set as ReportType in def_report.
def Render(self, Param1="", Param2="", Param3="") -> str:
Returns HTML containing a Bootstrap <ul class="timeline"> list. A "Glossary" header entry is prepended automatically. The query must return five columns per row: grouping label (column 1), FontAwesome glyph class (column 2), heading text (column 3), content text (column 4), and Bootstrap colour name (column 5). When the grouping value changes between rows a group label separator is inserted.
Requires jquery.timeago.js.