add JBDS 8.0.0.Beta1, JBT 4.2.0.Beta1, and fix links for JBT 4.2.0.Alpha1/Alpha2. Because half of them were 404'd and the wrong file sizes
add marketplace URLs for JBT 42B1 and JBDS 80B1
Revert "add marketplace URLs for JBT 42B1 and JBDS 80B1"

This reverts commit 180a75f50f964b5f41cec80be2129fc7824c2647.
Revert "add JBDS 8.0.0.Beta1, JBT 4.2.0.Beta1, and fix links for JBT 4.2.0.Alpha1/Alpha2. Because half of them were 404'd and the wrong file sizes"

This reverts commit 0da6d2179cc04ba2290cccefc63cbdc81891e55f.
blog about luna nightly and add blog template