* progress on export feature
* Merge branch 'master' into impl-export
* rename func
* imports
* confs
* export single works
* impl export
* Merge branch 'master' into impl-export
* cleanup exports code
* rename to backup
* rename to backup
* Merge branch 'master' into impl-export
* full test for backup
* Merge branch 'impl-export' of github.com:prysmaticlabs/prysm into impl-export
* gazelle fix
* terence feedback
* merge confs
* Merge branch 'master' into impl-export
* refactor into single select accounts function
* gaz
* Merge refs/heads/master into impl-export
* victor's feedback
* validate yes or no
* confs
* close the zip file in defer
* Merge refs/heads/master into impl-export
* Merge refs/heads/master into impl-export
