syntax errors corrected
Make Firewall Rules Advanced Options open if used

Currently, if there are some settings defined in Firewall Rules Edit, Advanced Features, Advanced Options, the Advanced Options section is left minimized when the Firewall Edit screen is displayed. This makes it easy for a user to not notice that there are some Advanced Options settings.
This change makes the Advanced Options section be displayed if any of the settings are defined, in the same way it is done for all the other Advanced Features sections.
bring up appropriate interface for GRE/GIF. Ticket #3281
Use a step of 64 here too to comply with what the daemon can parse/understand
Remove not needed anymore function
update link for 2.2
Merge pull request #995 from ayvis/master-syntax-errors

syntax errors correction
Correct the generation of the config for mobile tunnels as well
Correct the step for phase2 algos as well
Better just use start here seems to be more reliable
default openssl to 2048
Refine check for existence of rule advanced options
Merge pull request #997 from phil-davis/master

Make Firewall Rules Advanced Options open if used
Remove unecessary quotes
Skip input validation when choosing an existing certificate, it should fix #3505