Notification+RPC: STREAM mode disabled

The STREAM mode of the notification module has been forbidden.
For the smooth STREAM mode workflow is needed to do the following:
 - create reliable workflow with regexes in the STREAM mode
 - need to work with more than one msg of the same regex
 - need to ensure delivery of all the msgs required by the template message
GUI: implemented new way of deleting groups

- Delete list of groups instead of single groups.
  This will ensure, that delete is performed in right order and
  uses 1 single call to core instead of multiple.
Merge pull request #301 from zlamalp/deleteGroups

GUI: implemented new way of deleting groups

- Delete list of groups instead of single groups. 
  This will ensure, that delete is performed in right order
  and uses 1 single call to core instead of multiple.
Merge pull request #298 from jirmauritz/notification_1.1

Notification+RPC: STREAM mode disabled

The STREAM mode of the notification module has been forbidden.
For the future smooth STREAM mode workflow is needed to do the following:

- create reliable workflow with regexes in the STREAM mode
- need to work with more than one msg of the same regex
- need to ensure delivery of all the msgs required by the template message
SERVICES: added scripts for LDAP support

- Added gen/slave scripts for LDAP service.
- Added ldifdiff a ldifsort scripts from CPAN contrib used by our slave script.
- Added empty pre script with local settings about ldap (authz)
- Added password manager for LDAP (can be used on it's own or by our default pw-manager).

For service LDAP to work, destination LDAP must have included schemas:
"inetUser" and "perunEduroamUser".
SERVICES:  enable ldap service in main script
SERVICES, UTILS: fixes for ldap service and password manager

- move ldap's password manager to perun-utils project
- fixed indentation spaces -> tabs
- slave script, use ${work_dir}/mod instead of mod
- fixed some typos and indentation on eval for password manager