Added a generic (template) file to hold common templates, added a template function to render list of groups (collapsible), reworked the admin interface to send newsletters

Signed-off-by: emanuele <emanuele45@gmail.com>
Missing file...

Signed-off-by: emanuele <emanuele45@gmail.com>
Renamed Helpers.template.php to GenericHelpers.template.php - thanks eurich for the suggestion

Signed-off-by: emanuele <emanuele45@gmail.com>
Moved template_select_boards to GenericHelpers

Signed-off-by: emanuele <emanuele45@gmail.com>
A couple of comments removed

Signed-off-by: emanuele <emanuele45@gmail.com>
wording: addon in favour of add-on
Signed-off-by:Thorsten Eurich <thorsten@eurich.de>
unnecessary require.
Signed-off-by:Thorsten Eurich <thorsten@eurich.de>
blank line removed.
Signed-off-by:Thorsten Eurich <thorsten@eurich.de>
var wasn't used. 
Signed-off-by:Thorsten Eurich <thorsten@eurich.de>
some missing docs.
Signed-off-by:Thorsten Eurich <thorsten@eurich.de>
typo in function name.
Signed-off-by:Thorsten Eurich <thorsten@eurich.de>
blank line again.
Signed-off-by:Thorsten Eurich <thorsten@eurich.de>
added missing docs (blame ema for this one :P)
Signed-off-by:Thorsten Eurich <thorsten@eurich.de>
blank line..
Signed-off-by:Thorsten Eurich <thorsten@eurich.de>
more blank lines ..
Signed-off-by:Thorsten Eurich <thorsten@eurich.de>
Merge pull request #818 from emanuele45/newsletter

Some themes-related things (including rework of newsletters interface
Functions retrieving statistics now use Stats.subs.php

Signed-off-by: emanuele <emanuele45@gmail.com>
ssi_queryMembers uses retrieveMemberData from Members.subs.php

Signed-off-by: emanuele <emanuele45@gmail.com>
To squash in stats

Signed-off-by: emanuele <emanuele45@gmail.com>
Use a login form more close to the default one

Signed-off-by: emanuele <emanuele45@gmail.com>