Fixed tool tip to accomodate sorting.
Added workaround for problem introduced in Java 1.7.0_45-b18 with
DataFlavor being loaded in a different classloader.  We cannot refer to
singletons in the RocketComponent class.
Merge pull request #164 from kruland2607/master

jdk 1.7.0_45 drag & drop fix and simulation panel tool tip fix.