Changed location of tomcat distribution mirror.

Now using...
http://www.us.apache.org/dist
New Tag Point fixes issue with pip
Update tomcat version to one available

The old version went away
UV-CDAT 1.5.0 - they took out lxml so had to put it back in for publisher.  Oh and tomcat version rolled off edge so updated
Fix bug in check-certs by sourcing esg-functions
Cosmetic Fix: tab vs whitespace
Merge pull request #27 from pchengi/devel

Bug fix: Solve issue of valid certificate getting trashed due to not invoking esg-functions prior to call of check_cert_expiry_for_files function.
Fix for removing defaults webapps
Merge pull request #29 from ncaripsl/devel

Fix for removing default webapps