Updated backend and theme to be able to deal with deleted accounts
* Backends will skip any users that have no account_id associated with
their shares
* Updated round stats theme to show users as unknown if none can be found
This will not fully address the issue of account deletion but at least
wont break the system anymore.
* [IMPROVED] Removed uneeded data array from round page
* [IMRPOVED] Sorted round shares via User ID as key for easier access
* [IMPROVED] Added share count to transaction list in prop
* Adjusted mmcfe-ng occurences in code
* Adjusted Database strucutre to only supply the full structure
* Adjusted default template to MPOS
Addresses #643
