external networks: filter is now applied when adding a new instance
bugfix, removed debug output
hosts: when host list is filtered and the add button is clicked, the selected site is automatically entered.
filter is now applied to add-profile form
filter is now applied to add-template form
fix
fixed the bug that setting the external network instance host filter to "all" would reset the filter for the network kind
Merge pull request #758 from t-gerhard/external_network_filter_in_addform

External network filter in addform
Merge pull request #759 from t-gerhard/bugfix_networkfilter

fixed the bug that setting the external network instance host filter to ...