validation/**: removed by=... indicators so that we don't have to add an author name every time a file is changed. the author indicator is not needed now that both Brad's and my edits are open-source.

validation/aggregating/*.by=Brad@iPlant*: placed under version control, since these are now open-source

validation/**: removed svn:ignore exclusion of iPlant-owned files, since these are now open-source

added validation/aggregating/, containing folders for Brad's scripts (the scripts themselves cannot be in the repository because they are not UCSB-owned)