Release/7.0.0

[patric-eberle]

Pull request

• (Breaking) Changes the query hash in the webpack config to a file hash by default to prevent proxy caching.
• (Feature) Adds 'isMobile' computed to the '$viewport' helper/tools.
• (Change) Changes remote asset protocols to https to prevent security exceptions on styleguide server.
• (Change) Reverts router mode to 'history' for styleguide build.
• (Change) Replaces relative imports with alias based ones.
• (Change) Adds postcss as standalone NPM package because it is no longer a dependency of the postcss-loader.
• (Change) Updates roadmap in readme file.
• (Update) Updates all NPM packages to the current version. Except:
  • babel-core because it is still needed by jest/vue-jest
  • babel-eslint because of the issue "Cannot read property 'range' of null" with import syntax babel/babel-eslint#815
  • vue-js-modal because version 2.0 is not ready

Ticket

No Ticket

Browser testing

• http://localhost:8080/styleguide

Checklist

• I merged the current development branch (before testing)
• Added JSDoc and styleguide demo
• Tested all links in project relevant browsers
• Tested all links in different screen sizes
• Did run automated tests and linters
• Did assign ticket
• Double checked target branch

Review/Test checklist

• Did review code and documentation
• Tested all links in project relevant browsers
• Tested all links in different screen sizes
• Did check accessibility (Wave, only errors)
• Re-assign ticket to developer