Update ProductionHeroku.md

change retailos to myapp
Updated documentation about gzip filters
Fix typo in ScalaWS.md

s/ore/are/
Merge pull request #1975 from saeta/patch-1

Fix typo in ScalaWS.md
Merge pull request #1970 from retailos/patch-2

Update ProductionHeroku.md
don't throw exception if application.conf defines a value for ws.timeout