[HatoholError] Rename an error.

HTERR_FAILED_PARSER_ERROR ->
HTERR_FAILED_TO_PARSE_JSON_DATA

The error of this type error is used in various places in Hatohol.
So the place where it's defined is moved.
And I made the name more specific.
[HatoholError] Rename an error.

HTERR_FAILED_INTERNAL_ERROR ->
HTERR_INTERNAL_ERROR

The error of this type error is used in various places in Hatohol.
So the place where it's defined is moved.
And I renamed it to remove redundancy.
Merge pull request #505 from project-hatohol/arrange-error-type

Arrange error type