This may have negative side-effects depending on the build environment.

Change-Id: I70356e80f26683ec4f5ed6993c134a44807d6def

Change-Id: Idf38e82631a4e22540aa5dec8ec2db0ab4a38c2e

Handle application/edited-message type to support message edition.
Previous bodies are saved in the interaction to be able to get the
original post to avoid unwanted editions.

While loading a conversation, we store the editions in a temporary
map that we link once the edited message is detected. This work
because we can't edit a message before this message exists.
PreviousBodies in interaction.h contains every previous body detected
and the client can show previous version of the message in a popup.

Deleting a message works the same way, just that any message
with an empty body is not shown.

jami-daemon#316

Change-Id: Ib158abd16ad4b629532de11694e88d86a12d72a8

jami-daemon#318
Change-Id: I79916422b90c6eb12252c96bb12e209188a81f94

In preparation for vendoring libjamiclient into 'src/libclient/'.

GitLab: #734
Change-Id: Ibd956abc8fe9bd454ac0e9a5a28b77a5a74174e7

Change-Id: I8eb66c1c3cddb3bf73b6784a9876dd9dc9c12481

Change-Id: I90fcbc735f084ab37abfa3b466b97cf56c640247