Remove vim swap files.

update memory settings, docs version

Updated the URLs for the Java SE and EE API docs, which are now in an…

… Oracle domain.

Some minor changes to the docs - nothing substantive.

GRAILS-6783 - minor doc fix

GRAILS-2375 docs for updateable and insertable

clarified datasource docs, mostly to add the validationQuery example

GRAILS-6248 document usage of --snapshot option on release-plugin