* get meta data from dataframe meta

* gmdMeta is not used anymore

* wip: move deep link creation to backend

* Refactor backend. Remove not used front end code

* Unit test deep links. Remove not used frontend tests

* remove reference to gmdmeta

* fix goimports error

* fixed after pr feedback

* more changes according to pr feedback

* fix lint issue

* fix bad math expression check and fix bad test

* Decrease nesting

* put link on first data field only