JBIDE-15327 CDI Test failure

In method XModelObjectIcon.getEclipseImage0(), code synchronized
by obtained registry instance, requests registry instance again,
but at initialization, this method does not guarantee the same
instance when requested from two threads concurrently.
Update README.md
[JBIDE-15285] Increment minor version of jbosstools-base/foundation submodule

New class Trace was introduced in Public API of foundation submodule, thus minor version should be incremented.
1.0.0-SNAPSHOT -> 1.1.0-SNAPSHOT
JBIDE-15151 : gracefully handle uninitialized classpath containers

Signed-off-by: Fred Bricon <fbricon@gmail.com>
JBIDE-11319: Url for Eclipse-SourceReferences
JBIDE-15350 Using JBoss Tools Properties Editor, breaks the format

Implemented algorithm that compares loaded and current values and
if the value is modified, merges it in the way that preserves
format as much as possible.