Conditionally set base_url so it can be used for both the development environment and on the server.
Conditionally set base_url so it can be used for both the development environment and on the server.

git-svn-id: 254b55ed5af74be1d7d70afec450d37b329a3231@21 b159389c-fc5d-0410-935c-b53355241f03

cosmolab/chemdb,cosmolab/chemdb,cosmolab/chemdb