BZ919423 Remove eviction configuration from Carmart quickstart

* also remove redundant configuration elements from README files
Remove statement about unsupported JBoss Transactions in EWS/Tomcat
Further cleanup of readme files

* formatting of config snippets in hotrod-secured quickstart
* do not point to non-existent hotrod/client directory in the server distro
BZ1112144 Use community version of Arquillian
ISPN-4747 Update README files in quickstarts
ISPN-4749 Enable unit tests in secure-embedded-cache quickstart