#994 Make JSON object mapper injectable
Fixing #923 - cookie expiry is now further in the past

On a loaded server, it's possible that the cookie expiry time may
actually end up being in the future compared to the date header.  This
puts it one day in the past.  This also should be long enough to deal
with any issues regarding timezones and clocks out of sync.
Update IDE.md

I skipped to the IntelliJ section and started idea instead of having play generate .idea folder, hope this helps somebody
refact def code from Application to test method scope
Merge pull request #1031 from q42jaap/master

Small doc change for IntelliJ IDE
Merge pull request #923 from jroper/earlier-cookie-expiry

Cookie discard may not discard the cookie for the next request
Selenium helper to submit a form with fields in one go
extract code from http.ScalaBodyParsers.md
extract code from http.ScalaBodyParsers.md
Merge pull request #1046 from XuefengWu/extrac-code-doc-scala-http-2

Extrac code from ScalaBodyParsers.md
Merge pull request #1034 from rschellhorn/submit-helper

Selenium helper to submit a form with fields in one go
Merge pull request #994 from jroper/inject-object-mapper

Manage Java ObjectMapper lifecycle via a plugin
extract code from ScalaActionsComposition.md
Merge pull request #1052 from XuefengWu/extrac-code-doc-scala-http-2

extract code from ScalaActionsComposition.md
Fixed incremental compilation for doc code samples
Extracted code samples from async docs