Browser migration

[abose]

Browser does not have nodejs env. We have to create remove node dep from brackets to port to the browser while maintaining the feature compatibility.

Stage 1 - Node runtime removal

Remove deprecated npm flows

• [x] ~~https://github.com/aicore/phoenix/issues/9~~

Remove all node based default extensions.

• [x] ~~brackets-eslint removed as part of this change~~
• [x] ~~php tooling removed. Will not merge in phoenix core till we have dev request. https://github.com/aicore/phoenix/issues/8~~
• [x] ~~https://github.com/aicore/phoenix/issues/7~~
• [x] ~~https://github.com/aicore/phoenix/issues/13~~
• [x] ~~https://github.com/aicore/phoenix/issues/14~~
• [x] ~~https://github.com/aicore/phoenix/issues/15~~
• [x] ~~https://github.com/aicore/phoenix/issues/16~~

Direct integration for their party deps instead of old NPM

• [x] ~~#40~~

Stage 2 - brackets functionality reinstate with node alternative libs in the browser

Build Nodejs compatibility layer in browser

• [x] ~~https://github.com/aicore/phoenix/issues/19~~
• [x] ~~https://github.com/aicore/phoenix/issues/3~~
• [x] ~~https://github.com/aicore/phoenix/issues/18~~

Migrate functionality

• [x] ~~#22~~
• [x] ~~#24~~
• [x] ~~#26~~
• [ ] #56
• [ ] #58
• [x] ~~#27~~
• [ ] #29
• [ ] https://github.com/aicore/phoenix/issues/10

Reinstate functionality

• [x] ~~#51~~
• [x] ~~#52~~
• [x] #209 - replaced with JSHint, marking as done as linter support is enaled. ESLint will be enabled only in installed builds.
• [x] #39
• [x] #38
• [x] ~~#47~~
• [x] #67
• [x] ~~#74~~