* Consistent license message for all the go files
* Fixing the last set of unconsistencies with the license headers
* Addressing PR review comments
* Fixing busy.go and busy_test.go license header
* Update LinkMetadata.Get store and interface
* Update mocks with make store-mocks
* Update tests and implementation
* Avoid casting LinkMetadata.Data
* Fix indent
* Make error more explicit
* Fix indent (was containing spaces)
* Test value returned by LinkMetadata().Get()
* MM-13664 Added LinkMetadata types
* MM-13664 Use LinkMetadata when populating post metadata
* Fix unused import
* Fix index name on SQLite
* Finish adding unit tests
* Address feedback
* Increase max length of URL column to 2048 characters