Delrifai issue 360
Developer notes:
The error is caused due to an issue in the calculation done in getVestsToHiveRatio where the data pulled for the values total vesting fund hive and total vesting shares was being pulled as a string causing the wrong calculation. To fix this I pulled the data for this function from headBlockData instead of Hive.BlockDetails
Branch and commit notes: created branch origin/delrifai_issue_360 commit 7c01ab20
Testing notes: The function is used only at this location and hence the changes are reflected only in the HeadBlockCard