[ALOY-1648] Include BackboneJS v1.4.0

Description

Comments

1. Ewan Harris 2019-03-07 For reference, previous PRs and ticket for 1.3.0 https://github.com/appcelerator/alloy/pull/868 https://github.com/appcelerator/alloy/pull/870 ALOY-1534. Note that any underscore requires must be adapted for the alloy path.
2. Ewan Harris 2019-03-07 Thanks for the ticket [~ahmed.mohamed20320]! I think like previous versions, we'll include backbone@1.4.0 in the distribution but not make it the default version. What do you think [~topener]? Maybe we could update the template config.json to point to a newer version?
3. Ahmed Mohamed 2019-03-07 This would be nice because of a lot of major changes in 1.3.3 and later.
4. Rene Pot 2019-03-07 I feel adding it as an option in config is great, like how it is done now too. In the long term we should look into making it default though, maybe for 9.0
5. Ewan Harris 2019-03-29 We should also evaluate updating to underscore 1.9.1 (currently 1.8.3) when we do this
6. Ewan Harris 2019-04-30 PR: https://github.com/appcelerator/alloy/pull/929
7. Keerthi Mahalingam 2019-06-19 Tested with cli 7.1.0-master.22.BackboneJS v1.4.0 and upgraded UnderscoreJS 1.9.1 is included. Also did quick check with kitchen sink v2 and works as expected.closing *Test Environment:*

      Name                        = Mac OS X
        Version                     = 10.13.6
        Architecture                = 64bit
      Node.js
        Node.js Version             = 10.13.0
        npm Version                 = 6.4.1
      Titanium CLI
        CLI Version                 = 5.2.1
      Titanium SDK
        SDK Version                 = 8.2.0.v20190619100154
      Cli =7.1.0 master 22
      Device -Samsung 5s android 6 ,iPhone 6s plus iOS 12
      

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