change the path converter for datalink IDs to allow slashes

[kimakan]

Tested with applause and gaia dev instances

[coveralls]

Pull Request Test Coverage Report for Build 4786790666

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 64.14%

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Totals
Change from base Build 4784583091:	0.0%
Covered Lines:	4697
Relevant Lines:	7323

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💛 - Coveralls