Little fix for the reordering of the lines

When a line is cloned, the weight of the new line wasn't set.
And there was a little copy/paste error in the legend
Evolution in the user edition

We now have to validate the changes with our password.
Also, if we want to change our password, a double-check system has been set
to avoid the mistakes.
Add an effective period to the checks (sql script)

4 columns was added in the checks table to define
start/end time and start/end day for a check so that the application
won't notify the users if an alert happens outside of this period.
It can be usefull to not monitor data during the night and the week end
or other applications...
Send a mail to all the users of a check

It can be usefull to start a debate, discuss values or tell the others
after an alert that you worry it.
Add other usefull values to the dashboard options

Options like "yesterday" start from midnight
Add a CSS class to the btn
Modifiy test to activate "result.php" menu