Improved directives `rbs-document-href` and `rbs-document-popover` to allow Angular expressions in directives' values, such as `rbs-document-href="Rbs_Media_Image,(= mediaId =)"`.
Merge pull request #345 from fredericbonjour/Admin

Improved directives `rbs-document-href` and `rbs-document-popover` to allow Angular expressions in their values.