Add snapshot of clojure.java.jdbc supplemental documentation, add title/layout, fix links.
Basic outline of java.jdbc section of docs.
Add java.jdbc section to main content page.
Merge branch 'master' into java.jdbc
Expand java.jdbc section, update connection pooling and DDL examples
Corrected ns alias in drop table example
Clarify ns alias used in this page.
Merge pull request #119 from seancorfield/java.jdbc

Initial snapshot of clojure.java.jdbc docs