Merge pull request #22 from ayshsandu/feature-store

Fix Store:Sorting/Searching, Publicher: LC state endpoint
email-notifications intial implementation
Removed logs and top assets search causes a redirect-temp fix
Merge pull request #24 from sameerahj/feature-store

email-notifications intial implementation
Removed test configuration link from the side bar
Merge branch 'feature-store' of https://github.com/wso2-dev/product-es into feature-store
Fixed listing page not rendering thumbnails when scrolling
fixed store infinite scroll
Merge remote-tracking branch 'upstream/feature-store' into feature-store