catalog item id in GUI (clickable) and on REST

in REST API for EntitySummary and PolicySummary,
and in summary tab on GUI when available;
also better spacing and suppressing of absent/redundant information in entity-summary page
SoftwareProcess: don’t getShellEnv() if supplied

- Calling getShellEnvironment() during jboss.install() was causing it
  to lookup the config, including sysprops. However, that required
  MySql to have a URL before it could resolve.
  On localhost (e.g. integration tests), the jboss.install() held a
  lock (SshMachineLocation.acquireMutex) which meant only one thing
  could be installed at a time - hence prevented MySql from being 
  installed. Therefore deadlock.
- Fixed by guarding the call to getShellEnvironment(), to only be
  done if env was not explicitly supplied.
Tomcat install: don’t resolve config (via env variables)
fix BrooklynNodeIntegrationTest.testStopPlainThrowsException

- Test was leaving brooklyn process running
This closes #301
Fix JcloudsObjectStoreAccessorWriterTest
set entity RO status much earlier when known

mainly to enable suppression of log messages that are hugely noisy in read-only mode
improve logging for persistence and rebind

a few more detailed messages, including timings;
and lots of suppression of messages during redind-read-only
optimize rebind process

remove extraneous obj store lists+reads from process, and a bunch of code/redundancy tidy, and a bit more log tidy
minor code review cleanups for rebind/persistence logging
This closes #298
This closes #302
This closes #303
Trivial XML syntax error fixed.

Committing trivial fix directly to master. Minor XML syntax error - no
space between two attributes. Seems that most XML parsers didn't mind
this but a strict parser (e.g. xpath command on OSX) rejects it.
fix for TomcatServerSoftlayerLiveTest
[maven-release-plugin] prepare branch 0.7.0-M2-incubating
[maven-release-plugin] prepare for next development iteration
This closes #306

* github/pr/306:
  fix for TomcatServerSoftlayerLiveTest