GH-37 patch release updates for 1.3.1

[brodycj]

Changes

• CB-14251 cordova-common@^2.2.5 update (1.3.x only)
• Updates from master:
  • GH-35 add license header to spec/support/dummy-local-plugin/plugin.xml (copied from cordova-plugin-device)
  • GH-20 Fix repo url in package.json
  • CB-13503 fix trimID bug (GH-13)
  • Enable support for git+http, along with unit test (GH-12)
• test updates, mostly from master:
  • Add AppVeyor CI & Travis CI on Node.js 10 (1.3.x)
  • eslint devDep updates (GH-28)
  • [GH-24] Speed up tests (partial cherry-pick)
  • Move and rename some e2e tests (GH-24)
  • quick fix of fetchAndMatch for Node.js 4 (spec)
  • Refactor fetch e2e tests (GH-24)
  • Use fs.readJsonSync to read package.json (GH-23)
  • [GH-23] shelljs -> fs-extra (spec only - partial)
  • npm i --save-dev fs-extra@4 - quick fix needed for [GH-23] shelljs -> fs-extra in spec only (1.3.x)
  • Simplify tempDir setup in tests (GH-23)
  • Add workaround for failing tests on AppVeyor/Node10
  • Increase test timeouts (GH-19)
  • Let jasmine handle promises
  • Fix linting errors [spec] (GH-15)
  • Lint all *.js files in the repo (GH-15)

Motivation & rationale:

• repo url has been incorrect for quite a while, fix is desired for upcoming patch release
• more explicit request for recent cordova-common@2.2.5 version is desired
• test updates are wanted due to improved stability when testing on more Node.js versions
• recent test updates not affected by recent change to cordova-ios to require Node.js >= 6 on master
• updates from GH-12 & GH-13 are desired:
  • needed to pass new spec updates without modification
  • already not released for almost a half year
  • low risk of breaking something else
• direct interaction with master branch which now targets next major release is not desired

Some updates not (yet) included from master:

• Drop support for Node.js 4 (should not be done in non-major release update)
• CB-14173 Fix cordova <platform|plugin> add --link (GH-26)
• CB-14133 Avoid fetching already installed packages (GH-24)
• Isolate Q usage to prepare later removal (in index.js & spec/fetch-unit.spec.js) - GH-17
• Part of speed up tests by about 250% (GH-24)
• Handle missing options (GH-22)
• Simplify installation location retrieval (GH-18)
• Don't manually delete node_modules contents (GH-23)
• GH-23 - Replace shelljs with fs-extra and which (changes to spec/fetch.spec.js & spec/helpers.js but not to spec/fetch-unit.spec.js, index.js or package.json are cherry-picked in this PR)

Testing

• [x] npm audit shows 0 vulnerabilities (npm@6.3.0)
• [x] npm outdated --depth=0 shows no red entries
• [x] coho audit-license-headers -r fetch shows no missing license headers
• [x] coho check-license -r fetch shows no incorrect licenses (manually verified that xmldom has acceptable MIT license option)
• [x] check that npm test & other tasks succeed on AppVeyor CI
• [x] check that npm test & other tasks succeed on Travis CI

[brodycj]

@raphinesse I just rebased with the stray changes in 30d05ba taken out, would like to merge (as a merge commit) once Travis goes green.

[raphinesse]

Can't seem to change my review to approval now that the branch is merged. But I approve :+1: