Add support for two additional datatypes (DB2)

Add support for zoned decimal (NUMERIC) and single-precision floating
point data types.
reformat DbAutoGeneratedKeyAccessor
fix for testing autogenerated keys

it seems that ResultSet#getObject doesn't reliably return an appropriate
datatype when fetching auto-generated keys after an insert statement
eg for Derby, even if the autogenerated column has type INT or BIGINT,
a java.util.BigDecimal is still returned.

The change works around this problem by using one of the ResultSet#get<X>
methods to cast the result to the appropriate datatype, and adds tests for
this problem.
Merge pull request #135 from benilovj/autogenerated-key-type-fix

fix for testing autogenerated keys
Add wikiDocs gradle task for integrating DbFit wiki docs with FitNesse ones
Add reference from DbFit wiki docs to FitNesse wiki docs
Modify startFitnesse scripts so that dbfit-docs is first in classpath
(In order to override updateList of fitnesse updater to take DbFit
wikidocs)
Remove "-o" option from startFitnesse to allow docs being extracted
without changing the script.
Remove the expanded FitNesseRoot from the distrib since wiki docs are
alreayd in dbfit-docs.jar
Reduce size of FitNesse header on front page to align it with DbFit one
English grammar fix
Merge pull request #136 from benilovj/integrate-dbfit-and-fitnesse-wikidocs

Integrate dbfit and fitnesse wikidocs
postgres: bugfix for insert with autoincrement
serve dbfit 1.1 manual using github releases
Merge pull request #139 from benilovj/serve-dbfit-manual-from-github

serve dbfit 1.1 manual using github releases
serve the latest binary release from github releases

the benefit of this change is that the binaries will no longer have to be
served from a private s3 bucket.

the unfortunate downside of this change is having to change another
variable whenever a release is done, namely the github_artifact_id
which looks like a counter of all github release binaries.
Merge pull request #138 from benilovj/pg-insert-with-autoincrement-test-coverage

postgres: bugfix for insert with autoincrement
Merge pull request #140 from benilovj/serve-release-binary-from-github

serve the latest binary release from github releases
replace the 'what's new' page with the github releases page
Merge pull request #141 from benilovj/replace-whats-new-page-with-github-releases-page

replace the 'what's new' page with the github releases page