EAD import: handle @otherlevel and unset @level attributes on components
Windows-related fixes (batch and backend Gemfile)

* Quote GEM_HOME in batch file to address issues with spaces
* Add jruby-openssl to backend Gemfile
EAD import: handle @otherlevel and unset @level attributes on components
Windows-related fixes (batch and backend Gemfile)

* Quote GEM_HOME in batch file to address issues with spaces
* Add jruby-openssl to backend Gemfile
Merge branch 'master' of github.com:archivesspace/archivesspace [ci skip]