JBIDE-15280 Update parent/pom.xml version to 4.2.0.Alpha1

updated parent pom version 4.1.0.CR1-SNAPSHOT to 4.2.0.Alpha1-SNAPSHOT
[JBIDE-13795] Incorrect URL for JBoss Jira on readmes
JBIDE-15343
JBIDE-15334 - Use Java5 method to check is String is empty
JBIDE-15272 javadoc updates as per fred's request
JBIDE-11365 typo in category name
JBIDE-10219 Migrate org.eclipse.core.runtime.contentTypes extension points to org.eclipse.core.contenttype.contentTypes
JBIDE-11319: Url for Eclipse-SourceReferences
JBIDE-11365 - small cleanup as per fred's comments on PR
JBIDE-15312 versioning and dependencies
JBIDE-15312 versioning and dependencies update for master
JBDS-2703 fixing error for unknown future versions to be correctly identified

JBDS-2703 - adding javadoc and override tags where applicable

JBDS-2703 updating version constraint for plugin requiring new api
JBDS-2703 fixing error for unknown future versions to be correctly identified
JBDS-2703 - adding javadoc and override tags where applicable
JBIDE-15310 - explicit detection for jpp6.1

uncommenting test suite classes (used during testing)

JBIDE-15310 forgot to update tests

Adding override tag
Adding decorator JBIDE-14728