Replace Channel# with Drop Down Frequency selection

[ysamouhos]

Instead of free text channel we should replace it with a drop down lost of frequencies for links.

Then replace the frequency selection in link plot to automatically plot using the user selected frequency of the link.

This will also help to get rid of the "Undefined index: frequency in geoimage.php" small bug as a side effect :)

This is also the first step to frequency planning features if needed later on.

[ysamouhos]

• Added frequency list in links table.
• Added drop down select in mynodes.
• Added visibility in nodes info.

• Pending Checks. Not visible if links type is AP. (needs debug).

[sque]

I thing that this feature should be deployed in tht next release. 1.0.1 should have only small bug fixes and does not introduce any new features.
Chaning milestone from 1.0.1 to 1.1.

[ysamouhos]

It is almost ready and we have 28 days untill this release.
Changing back to 1.0.1

[sque]

As per release policy, this issue cannot be accepted in the next patch release. See more #22. It is not about if it is ready or not. This change demands database upgrade which is incompatible with the policy. Moving to 1.1