Editing Template:List trail template

<noinclude>list table template for trails. Park/Trail aware. Probably will make different ones for Park vs. Trail instead of one monolithic beast.

Trails will have:
* Trail name
* Park or Trail System
* Highlight (Put underneath other info?)
* Distance from Kingsport - Could be later converted to a distance based on user configured location
* Round trip distance
* Trail Use Icons
* Features Icons
* Listing comment (underneath)

<p>It expects the following usage format.
<pre>
{{List trail template
 |#userparam=
 |trail=
 |park=
 |system=
 |highlight=
 |parking=
 |round trip=
 |use=
 |features=
 |list comment=
}}
</pre>
</noinclude><includeonly>{{#switch:{{{#userparam|}}}
|intro=intro
|outro=outro
|row=row
|header={{!}}-
!colspan="6"{{!}}{{{header|}}}
{{!}}-
}}</includeonly>