Create Puma appserver configuration file.
Add config/puma.rb to Pah _puma.rb partial file.
Load Puma configuration file on web process.
Add changelog entries about Puma configuration.
Merge branch 'master' into tm-puma-config

Conflicts:
	CHANGELOG.md
Improve puma feature check test.
Merge branch 'master' into tm-puma-config
Merge pull request #298 from Helabs/tm-puma-config

Improve Puma application server configuration