Fix flaky tests

[dplewis]

• Fixes unhandled promise rejection in LiveQuery-tests

(node:5669) UnhandledPromiseRejectionWarning: TypeError: Cannot read property 'send' of undefined
(node:5669) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). 

• ParseACLTest weren't waiting for Parse.User.logOut, there were so many I decided to rewrite the tests

Failures:
1) Parse.ACL allows logged in get
  Message:
    Unhandled promise rejection: ParseError: 101 Object not found for delete.
  Stack:
    error properties: Object({ code: 101 })
    Error: Object not found for delete.
        at /home/travis/build/parse-community/Parse-SDK-JS/lib/node/RESTController.js:324:19
        at <Jasmine>
        at process._tickDomainCallback (internal/process/next_tick.js:228:7)
2) Parse.ACL allows logged in find
  Message:
    Unhandled promise rejection: ParseError: 107 schema class name does not revalidate
  Stack:
    error properties: Object({ code: 107 })
    Error: schema class name does not revalidate
        at /home/travis/build/parse-community/Parse-SDK-JS/lib/node/RESTController.js:324:19
        at <Jasmine>
        at process._tickDomainCallback (internal/process/next_tick.js:228:7)
3) Parse.ACL allows logged in update
  Message:
    Unhandled promise rejection: ParseError: 107 schema class name does not revalidate
  Stack:
    error properties: Object({ code: 107 })
    Error: schema class name does not revalidate
        at /home/travis/build/parse-community/Parse-SDK-JS/lib/node/RESTController.js:324:19
        at <Jasmine>
        at process._tickDomainCallback (internal/process/next_tick.js:228:7)
4) Parse.ACL allows logged in delete
  Message:
    Unhandled promise rejection: ParseError: 107 schema class name does not revalidate
  Stack:
    error properties: Object({ code: 107 })
    Error: schema class name does not revalidate
        at /home/travis/build/parse-community/Parse-SDK-JS/lib/node/RESTController.js:324:19
        at <Jasmine>
        at process._tickDomainCallback (internal/process/next_tick.js:228:7)
5) Parse.ACL enables get with public read
  Message:
    Unhandled promise rejection: ParseError: 107 schema class name does not revalidate
  Stack:
    error properties: Object({ code: 107 })
    Error: schema class name does not revalidate
        at /home/travis/build/parse-community/Parse-SDK-JS/lib/node/RESTController.js:324:19
        at <Jasmine>
        at process._tickDomainCallback (internal/process/next_tick.js:228:7)
6) Parse.ACL enables find with public read
  Message:
    Unhandled promise rejection: ParseError: 101 Object not found.
  Stack:
    error properties: Object({ code: 101 })
    Error: Object not found.
        at /home/travis/build/parse-community/Parse-SDK-JS/lib/node/RESTController.js:324:19
        at <Jasmine>
        at process._tickDomainCallback (internal/process/next_tick.js:228:7)
7) Parse.ACL does not enable update with public read
  Message:
    Unhandled promise rejection: AssertionError [ERR_ASSERTION]: false == true
  Stack:
    error properties: Object({ generatedMessage: true, code: 'ERR_ASSERTION', actual: false, expected: true, operator: '==' })
        at <Jasmine>
        at user.signUp.then.then.then.then (/home/travis/build/parse-community/Parse-SDK-JS/integration/test/ParseACLTest.js:244:7)
        at <Jasmine>
        at process._tickDomainCallback (internal/process/next_tick.js:228:7)
Pending:

[codecov]

Codecov Report

Merging #788 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #788   +/-   ##
=======================================
  Coverage   92.01%   92.01%           
=======================================
  Files          54       54           
  Lines        4908     4908           
  Branches     1087     1087           
=======================================
  Hits         4516     4516           
  Misses        392      392

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