caching of tip names and nodes
Fix ImportError in parse.py

Releated to:

    https://github.com/biocore/brokit/pull/18
Merge branch 'master' of git://github.com/biocore/qiime into import-error

Conflicts:
	qiime/parse.py
Merge pull request #1507 from ElDeveloper/import-error

Fix ImportError in parse.py
Merge pull request #1496 from wasade/simsam_perf_improvements

caching of tip names and nodes
MAINT: adapting to handle numpy qual
MAINT: removing __iadd__ on a str
MAINT: trim_fastq not actually used, deleted
MAINT: using scikit-bio's format_fastq_record
MAINT: fixing broken tests
STY: removing unused vars
STY: removing unused imports
MAINT: almost done with qual updates
TST: updates to use actual phred scores
BUG: was converting phred val to str
MAINT: simplifying calls to range, thanks @ElDeveloper
BUG: passing in the phred offset now
initial changes to add index page to workflow output
TST: updating qual scores to reflect their actual offsets
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