Dependencies issues for text manipulation tools at https://usegalaxy.org

[jennaj]

Details start here. Is not a Py 2-3 issue:

#288 (comment)

[jennaj]

Two simple tests in GUI 3/2 and none show up new in database as of 2/28:

• No issues https://usegalaxy.org/u/jen/h/test-tab-to-fasta-and-fasta-to-tab
• Minor issues "Join two datasets" with "rerun" not populating tool form with prior columns (datasets are populated), resulting in odd output eg: two datasets? one bed (with data) and one tabular (emtpy). Job info page is populated. https://usegalaxy.org/u/jen/h/test-cat-and-join

Think can ignore the second issue about join reruns.