Use RFC4770 format to store IM data in vCard-s
To store SIP/AIM/etc Evolution is currently using custom names such as X-SIP or X-AIM. This is compatible with RFC6350, but to foster compatibility with other software (for example Nextcloud) it would be nice if this could be changed to the name defined in RFC4770.
X-SIP:12345 --> IMPP:sip:12345
Edited by Milan Crha