* Fix odd placement of import
* Puts all of NewGenesisBlock() into GenesisBlock()
Also removes the unneeded TODO
* Add error check for db retrieval
* Add missing bazel imports
* Add back NewGenesisBlock and create GenesisBlock in NewBeaconChian
* Fix GenesisBlock() to grab the block from memory db
* Fix according to requested changes
Fix GenesisBlock() to grab the block from memory db
Fix odd placement of import
Properly add ParentHash to Block
Remove no longer needed if statement condition
Puts all of NewGenesisBlock() into GenesisBlock()
Also removes the unneeded TODO
Add error check for db retrieval
Add case for if the beaconChain is missing a genesisBlock
Add missing bazel imports
Add back NewGenesisBlock and create GenesisBlock in NewBeaconChian
Remove duplicate code
Change genesis block timestamp to unix 0
Adds info log when a genesis block isn't found
* Provide fakeClock to pass tests with a mocked genesisBlock
* Fix unexpected log in test from addition of genesis block
* Add tests for clock
