Speed up the verify page by limiting results

The verify page is falling over with alarming regularity. This commit
forces each of the 4 data sources to only fetch 50 results. This could
lead to a bit of an awkward user experience but it is certainly better
than the status quo of a 502 timeout error.
Merge pull request #69 from ahinz/bug/verify-page-too-slow

Speed up the verify page by limiting results
Expose tree photo url in API
Merge pull request #78 from ahinz/fix/backport-photo-api

Expose tree photo url in API
fixed bad username resolve
fix username resolve
fix username resolve
Update README.md

It's been mentioned that OTM v1.2 is best run atop Django 1.3. As such, django-pipeline version 1.1.27 needs to be used
Updated the profiles url.py to account for a username with @ . -

Updated the profiles url.py to account for a username with @ . -

Updated the profiles url.py to account for a username with @ . -
Merge branch 'v1.2' of http://github.com/daveizm/OpenTreeMap into v1.2
Merge pull request #80 from daveizm/v1.2

V1.2
Update speciesimport.py

Remove hard-coded "OpenTreeMap" from "treemap.models"
Merge pull request #81 from kbornhorst/patch-1

Update README.md
Merge pull request #84 from kbornhorst/patch-2

Update speciesimport.py
Update uimport.py

Removed hard-coded, case-sensitive "OpenTreeMap" references; Added a comment related to the current mechanism for specifying choices (implementation-specific file like "impl_chioces.sql" that's added to settings.py)
Merge pull request #87 from kbornhorst/patch-4

Update uimport.py
Merge pull request #91 from azavea/v1.2

Pull in v1.2 changes