Coverage cleanup (#2328)

- Stop running daily service tests in the main repo (since they're now handled [over here](https://github.com/badges/daily-tests)
- Add coverage and separate daily tests badges with links to coveralls
- Update our coverage ignores
    - Move scripts, which do not need coverage, into `scripts/`
- Split out coverage test for npm package
- Remove spurious env var

Ref: #1584 #2314

lib/export-badge-examples-cli.js

@@ -1,5 +0,0 @@
-'use strict'
-
-const allBadgeExamples = require('./all-badge-examples')
-
-process.stdout.write(JSON.stringify(allBadgeExamples))

lib/export-supported-features-cli.js

@@ -1,21 +0,0 @@
-'use strict'
-
-const path = require('path')
-const glob = require('glob')
-
-const supportedFeatures = {
-  logos: glob
-    .sync(`${__dirname}/../logo/*.svg`)
-    .map(filename => path.basename(filename, '.svg')),
-  advertisedStyles: [
-    'plastic',
-    'flat',
-    'flat-square',
-    'for-the-badge',
-    'popout',
-    'popout-square',
-    'social',
-  ],
-}
-
-console.log(JSON.stringify(supportedFeatures, null, 2))

lib/refactoring-cli.js

@@ -1,22 +0,0 @@
-'use strict'
-
-const chalk = require('chalk')
-const mapValues = require('lodash.mapvalues')
-
-const colorscheme = require('../gh-badges/lib/colorscheme.json')
-const colorsMap = mapValues(colorscheme, 'colorB')
-const { floorCount } = require('./color-formatters')
-const { loadServiceClasses } = require('../services')
-
-const serviceClasses = loadServiceClasses()
-const legacyServices = serviceClasses
-  .map(cls => (typeof cls.registerLegacyRouteHandler === 'function' ? 1 : 0))
-  .reduce((a, b) => a + b)
-const newServices = serviceClasses.length - legacyServices
-const percentDone = ((newServices / serviceClasses.length) * 100).toFixed(2)
-const color = floorCount(percentDone, 10, 50, 100)
-
-console.log(`Found ${serviceClasses.length} services:`)
-console.log(`- ${legacyServices} legacy services`)
-console.log(`- ${newServices} new services`)
-console.log(chalk.hex(colorsMap[color])(`${percentDone}% done`))