simplyfy adding contacts

[scusi]

to add a contact to your addressbook is to complicated.

how about to reduce it to alias and pubKey?

secureShare -addContact flw -pubKey HZfb8HL4tL7bGJBZq2ha1oyQkf3ePTsLCBBqKog8ESz4y

The server side username could be found by asking the server OR by generating the username from the pubKey.

[scusi]

In the end it does not matter if you have to have the secureShareUsername or the users encodeID before you can add someone to the addressbook.

One good thing could be to have somewhat shorter usernames. Something along the commons.ShortID

[scusi]

On shorter usernames:

With commits

• https://github.com/scusi/secureShare/commit/1f02ac95d87b34a6f58d8b644355c008c60fa949
• https://github.com/scusi/secureShare/commit/9606d3bfb00a4ca0e3f3141d994825f5d2049126
• https://github.com/scusi/secureShare/commit/b1abb33276ec2ddcd0a94704c36427d6de7f5456

there is are new functions to create a shorter username, namely:

• NewUserID https://github.com/scusi/secureShare/blob/b1abb33276ec2ddcd0a94704c36427d6de7f5456/libs/server/common/common.go#L34-L51

• VerifyUserID https://github.com/scusi/secureShare/blob/b1abb33276ec2ddcd0a94704c36427d6de7f5456/libs/server/common/common.go#L53-L66

• shortChecksum https://github.com/scusi/secureShare/blob/b1abb33276ec2ddcd0a94704c36427d6de7f5456/libs/server/common/common.go#L68-L81

There is also a small and simple command to generate a username

• https://github.com/scusi/secureShare/blob/public/cmd/ServerUsername/main.go

[scusi]

shorter usernames are now actually used, see commit https://github.com/scusi/secureShare/commit/61007b827121552d8f54a0ff154b7d31f1f5ec8d

secureShareUsernames now look like this: 89DMdTVFLa or 5NAqYu27C or 2kqK8cRKFf

[scusi]

also updated README with commit https://github.com/scusi/secureShare/commit/8f8c437a96d22d171371d62ba214c4bb4f146bb6