Minor code cleanups

Move template HTML strings outside of for loops
Add stored procedures to get participant names

For both human participants and animal participants
Add procedures for getting participant names
Add SP for getting bruce waynes
Modify to eliminate dynamic metadata queries
Renamed pet_survey.psp to animal_survey.psp
Merge branch 'ag_pet_survey' of github.com:adamrp/qiime_web_app into ag_pet_survey
Add ag_create_animal_survey_table to scripts

This script creates a new SQL table in the DB to store the information
of animal participants.
Add pet survey images
Added support for animal participants and samples

This will be accessible through menu.psp in a future commit
Modify SP to deal with animal participants
Add SP and function to add animal participants
Modify field names to match form field IDs
Add page used by AJAX to check participant name

Returns an error message if the value in form['participant_name'] already
exists.
Add support for animal participants

Menu now shows animal participants, similar to human participants
More changes to ag_animal_surey table in DB to match with psp form
Add a "comments" text box to the survey, change some form field names/IDs
Rename icon
Add animal participants to main menu
Merge branch 'ag_pet_survey' of https://github.com/adamrp/qiime_web_app into adam_dev

Conflicts:
	www/americangut/menu.psp
Modify CSS style on animal survey form
Change birth_date field to Age field
Fix environmental sample display