**This is a breaking change!**
Prior to this commit we had `AddCommunityToken(token *communities,
croppedImage CroppedImage)` that we used to
1. add a `CommunityToken` to the user's database and
2. to create a `CommunityTokenMetadata` from it which is then added to
the community's `CommunityDescription` and published to its members
However, I've then discovered that we need to separate these two things,
such that we can deploy a community token, then add it to the database
only for tracking purposes, **then** add it to the community description
(and propagate to members) once we know that the deploy tx indeed went
through.
To implement this, this commit introduces a new API
`SaveCommunityToken(token *communities.CommunityToken, croppedImage
CroppedImage)` which adds the token to the database only and doesn't
touch the community description.
The `AddCommunityToken` API is then changed that it's exclusively used
for adding an already saved `CommunityToken` to the community
description so it can be published to members. Hence, the signature is
now `AddCommunityToken(communityID string, chainID int, address
string)`, which makes this a breaking change.
Clients that used `AddCommunityToken()` before now need to ensure that
they first call `SaveCommunityToken()` as `AddCommunityToken()` will
fail otherwise.
e8bac916ec