ij-script-beanshell: fix dependencies
ij-script-beanshell: fix dependencies

1) Use ij-core instead of ij-ext (since ij-ext was merged).
2) Remove unused sezpoz dependency.
3) Add a blank line between project dependencies and third party ones.

biovoxxel/imagej,TehSAUCE/imagej,TehSAUCE/imagej,biovoxxel/imagej,TehSAUCE/imagej,biovoxxel/imagej