Removed imgs directory. Updated version to 1.0.0 everywhere.
Move jar signing to each feature and plugin.

Couldn't get jar signing to happen before metadata setup for the p2
repository, so we're now signing the jars in each plugin or feature
instead, and using pluginManagement in the parent pom.xml to
manage all the details.
Fixed a malformed version.
Fix Q7 tests to match current state of code.