Add methods to UniqueId.java for converting UID byte arrays to hex strings and
vice-versa
Add unit tests for new hex to byte methods

Signed-off-by: Chris Larsen <clarsen@euphoriaaudio.com>
Add HttpQuery.explodeAPIPath() to help API calls strip the /api/v# portion
Add unit tests for HttpQuery.explodeAPIPath()

Signed-off-by: Chris Larsen <clarsen@euphoriaaudio.com>
Fix issue in HttpSerializer.formatError where exceptions with null "message"
fields (NullPointerException) were throwing another NPE

Signed-off-by: Chris Larsen <clarsen@euphoriaaudio.com>
Add UniqueIdRpc for all UID related API calls
Add the /api/uid/assign endpoint to allow assigning UIDs for metrics, tag names and tag values via the HTTP API
Add TestUniqueIdRpc.java for unit testing
Add parseUidAssignV1() and formatUidAssignV1() serializer calls
Closes #79

Signed-off-by: Chris Larsen <clarsen@euphoriaaudio.com>