Refactor JSLint into an extension

[DennisKehrig]

Places in the code referring to JSLint

• base-config/keyboard.json
  • Defines keyboard shortcuts for navigate.gotoJSLintError
• brackets.config.json
  • Sets config.enable_jslint to true
• brackets.js
  • Loads JSLintUtils - only needed for the menu entries and the point below
  • Exports JSLintUtils for tests - affects Performance-test.js
• command/Commands.js
  • Defines Commands.TOGGLE_JSLINT
  • Defines Commands.NAVIGATE_GOTO_JSLINT_ERROR
• command/DefaultMenus.js
  • Adds menu item for Commands.TOGGLE_JSLINT
  • Adds menu item for Commands.NAVIGATE_GOTO_JSLINT_ERROR
• config.json - automatically generated by tasks/write-config.js
  • Sets config.enable_jslint to true (inherited from brackets.config.json)
• htmlContent/main-view.html
  • Adds toolbar jslint-results
• language/JSLintUtils
  • Main code for JSLint support
• nls/*/strings.js
  • Defines various translations for JSLint related strings - can probably stay there
• search/QuickOpen.js
  • References JSLintUtils in two comments
• styles/brackets.less
  • Defines the CSS classes jslint-disabled, jslint-errors and jslint-valid
• thirdparty/jslint/
  • JSLint library
• widgets/StatusBar.html
  • Adds the gold star for JSLint's status - should be possible to initially movie this elsewhere (e.g. JSLintUtils) since StatusBar.addIndicator is called for this already

[jasonsanjose]

Marking move to backlog