Revert "Prepare 6.2.0 M6 release"

This reverts commit 1c5f0b3644700e3221c09e0bba97acf99b24d078.
MAVEN-81 Disable XML validation so that the plugin works in offline mode
MAVEN-78 Upgrade JSF portlet archetypes to Liferay Faces 3.1.2-ga3
MAVEN-78 Upgrade JSF portlet archetypes to Liferay Faces 3.1.2-ga3 (exclude jsp-api from icefaces dependency)
MAVEN-78 Does order matter?
MAVEN-78 SF
Revert "MAVEN-78 Does order matter?"

This reverts commit 6f6483245dc98ca0aad49151bc01da72430d5f79.
MAVEN-82 Upgrade JSF portlet archetypes to Liferay Faces 3.1.3-ga4