Portal competitions

* added support for visualization of competition data on portal
FIX portal issue with publication date

* fixed issue with hiding recent data
Portal competitions added limit on shown rows

* number of shown competitions is now limited
Added date formatter.
Removed version with date formatter.

This reverts commit 659a6b1fb57115e714359e54f65e12ca7ddf468f.
Added date formater (Date() to backend format)
Added portal editor icons.
Portal / Editor - updated icons associated with editor menu items.
Portal - editor - change icons to white.
DateUtils
   - changed to universal code serving both client and server.
   - added comments to DateUtils
FIX - search no items found message to span whole row
DateUtils:
 - fixed internal method calls
 - fixed compile errors
Merge branch 'master' of https://github.com/stefan-lr/registries