Support Old Hydra APIs

[priyanshunayan]

I'm submitting a

• bug report.
• feature request.

Current Behaviour:

Right now, a strict checking is imposed on whether some properties are specified or not and later on properties like title and description are used to generate hydra-doc. But older versions of docs may or may not contain these properties. We should also be able to generate hydra-doc for these docs as well in order to support older versions.

Expected Behaviour:

All old and new Hydra based web APIs will be supported.
@Guttz @xadahiya @Mec-iS @vddesai1871

[Mec-iS]

as Hydra is a under-construction standard and it has not yet been publish version 1.0, back-compatibility cannot be guaranteed.