Update international-journal-of-wildland-fire.csl

 * full journal title should appear
 * no page labels for inproceeding articles
 * issue number is not given
 * fix some spacing

I will take this style as a reference style for the 2nd group in #1253 .
Merge pull request #1255 from zuphilip/patch-3

Update international-journal-of-wildland-fire.csl