Improvement/modules into theme

[michasik]

Related issues

#3139

closes #3139

Short description and why it's useful

• homepage module
• promoted offers modules
• claims
• UI store (needs to be careful - deps on core)
• Move order history to order module
• Move social-share (from core) to theme

Screenshots of visual changes before/after (if there are any)

Which environment this relates to

Check your case. In case of any doubts please read about Release Cycle

• Test version (https://test.storefrontcloud.io) - this is a new feature or improvement for Vue Storefront. I've created branch from develop branch and want to merge it back to develop
• RC version (https://next.storefrontcloud.io) - this is a stabilisation fix for Release Candidate of Vue Storefront. I've created branch from release branch and want to merge it back to release
• Stable version (https://demo.storefrontcloud.io) - this is an important fix for current stable version. I've created branch from hotfix or master branch and want to merge it back to hotfix

Upgrade Notes and Changelog

• No upgrade steps required (100% backward compatibility and no breaking changes)
• I've updated the Upgrade notes and Changelog on how to port existing VS sites with this new feature

IMPORTANT NOTICE - Remember to update CHANGELOG.md with description of your change

Contribution and currently important rules acceptance

• I read and followed contribution rules
• I read the TypeScript Action Plan and adjusted my PR according to it
• I read about Vue Storefront Modules and I am aware that every new feature should be a module

[pkarw]

I like this idea of cutting of the dependencies and the number of core modules - good job.

[michasik]

@filrak
I have some difficulties moving Claims module into theme.
I have made all the necessary refactor for claims in the commit #bf431f5 (last one). I got the build error

Error during render : /error
TypeError: Cannot set property 'claimsCollection' of undefined
    at Object.beforeRegistration (src/themes/default/modules/claims/hooks/beforeRegistration.ts:9:36)
    at VueStorefrontModule.module.exports../core/lib/module/index.ts.VueStorefrontModule.register (core/lib/module/index.ts:104:20)
    at server-bundle.js:1648:45
    at Array.forEach (<anonymous>)
    at registerModules (core/lib/module/index.ts:19:10)
    at Module../src/themes/default/index.js (src/themes/default/index.js:26:16)
    at __webpack_require__ (webpack/bootstrap:25:0)
    at Module.<anonymous> (core/app.ts:1:0)
    at Module../core/app.ts (server-bundle.js:282:30)
    at __webpack_require__ (webpack/bootstrap:25:0)

And in beforeRegistration hook in claims we want to assign a value to claimsCollection on $db property, which (I guess) has not been created yet.

Vue.prototype.$db.claimsCollection = new UniversalStorage(localForage.createInstance({
    name: (config.storeViews.commonCache ? '' : dbNamePrefix) + 'shop',
    storeName: 'claims',
    driver: localForage[config.localForage.defaultDrivers['claims']]
  })

@filrak It would be great, if you could have a look on it ;-)

[filrak]

Changes as we discussed in a call ;)

[filrak]

@patzick we need your okejka aswell

[patzick]

Only one suggestion from me

[pkarw]

is it ready for merge?