Loosen description of user need

[jernst]

It currently reads in Section 2:

The primary user need to solve with LOLA is to allow Fediverse users to move their accounts in response to moderation and defederation decisions.

IMHO these are important, but by no means the only ones. Here are some others:

• the source server has announced they will "go out of business"
• the source server may start charging their users (more) money
• the user may want to set up their own server at a domain of their own
• the user may be dissatisfied with performance, uptime, or other hosting characteristics.

I'm bringing this up because if a user with any of the non-mentioned reasons reads this document, they may stop reading at the first sentence of section 2 with the impress that "this is not for me".