Merge pull request #91 from niryariv/issue_61

enabled getting json plans for multiple gushim
jerusalem no longer has a specially-named server
limit gush plans to last 10 years when requesting multiple gushim
fix tests for new plan
Merge branch 'master' of https://github.com/niryariv/opentaba-server
accidentaly limited atom endpoint instead of json one
added gushim and updated tests for ramatgan
switch to mongolab, since mongohq removed the free plan
actually MONGOLAB_URI
fix #92 - support both MongoHQ/Lab
Merge branch 'master' into client_issue_57