Strip leading and trailing whitespace from character fields when I concatenate raw Google extracts

Triggered by processing Official Statistics - 2014 - Week 1 - 4/12 - Nighthawks @ Stags, a.k.a. 2014-04-12_vanNH-at-pdxST. Point 9 had a single space 3 rows below where point ended that caused empty cells to be extracted. Point 14 18vtt had a leading space.