buildSrc updated to use latest Gradle wrapper. See buildSrc git log
for complete details; in short, eclipse JDT prefs are now auto-generated
and the gradle daemon is no longer 'on by default', but must be enabled
with --daemon or -Dorg.gradle.daemon=true.
* removed all existing jdt preferences files in favor of auto-generation.
* removed .springBeans from .gitignore; this file should be
source-controlled for consistency and convenience.
* removed illegal @Override annotations. Eclipse/STS now catch these
properly!