initial changes to add index page to workflow output
updated so index page isn't supported in iterative mode, will add this in later as it's more complicated and less common - still needs testing with alignment, tree building, and tax assignment
fixed line wrapping in index file.
Merge branch 'master' of github.com:qiime/qiime into pick_otu_index

merge
changed index htm string format.
Merge pull request #1517 from johnchase/pick_otu_index

Pick otu index