Add class-attributes to custom fields on issue show page
On the issues show page custom fields are currently rendered without any id or class (I have yet to investigate how this is dealt with on other pages).
I would like to propose to add a class-attribute with a value like "custom-field-id-#" to the related tags in similar fashion as is already done for the default Redmine fields for issues on that page.
The attached patch makes a suggestion on how this could be implemented.
The patch was generated against redmine trunk at r9903.