Fix the formatting of the keyword and consistency in it's use.

I realized that the formatting of the keyword with the wildcard_like_string doesn't put the % at the beginning and end of the string I don't think.

Also, I noticed when filtering a column with LIKE, it doesn't properly setup the keyword to match the other elements and the wildcard setting, so for the specific case of filtering with LIKE, it now does that.
Merge pull request #146 from phazei/patch-2

Fix the formatting of the keyword and consistency in it's use.