TILECACHE_POLYGON_LAYER added
Force CONTACT_EMAILS into a tuple

to fix a mutable state bug. settings is an immutable object, but settings.CONTACT_EMAILS was a list. Over the lifetime of the appserver process, this list was being mutated to contain ALL senders. This was causing all users that have used the contact form and requested a copy, to get EVERYONE's copy.
Merge pull request #175 from steventlamb/bug/contact_form_multiple_recipients

Force CONTACT_EMAILS into a tuple
Fix search layer display lag on map
Fix JS lint
Merge pull request #176 from steventlamb/bug/zoom_lag

Bug/zoom lag
Merge pull request #170 from KeithUSF/patch-2

TILECACHE_POLYGON_LAYER added
Add a tool to merge duplicate species
Merge pull request #178 from ahinz/topic/merge-species

Add a tool to merge duplicate species
Update importer merge tool

Fixes gitlab 663

* Sort species by alphabetical order
* Display the cultivar and other part of scientific name fields
Check LA's species variable correctly

This variable is only defined by select instances

Fixes gitlab issue 664
Add USDA Grant info
Merge pull request #180 from ahinz/topic/js-error

Check LA's species variable correctly
Remove family name from species list

Fixes gitlab 579
Cleanup JS lint
Merge pull request #182 from steventlamb/topic/remove_family_name_from_species_list

Topic/remove family name from species list
Merge pull request #179 from ahinz/topic/merge-tool-ordering

Update importer merge tool