Resolve "Renvoyer l'alerte quand on reçoit une RoomSendError"

Closes #8

See merge request !7

Resolve "Logguer les accès aux metrics en debug"

Closes #5

See merge request !5

Merge branch '4-handle-roomsenderror-response-event-after-sending-a-message-to-matrix' into 'master'

Resolve "Handle RoomSendError response event after sending a message to Matrix"

Closes #4

See merge request !4

Resolve "Afficher le texte des emojis"

Closes #3

See merge request !3

Resolve "Mauvaise permissions sur le fichier de token"

Closes #2

See merge request !2

Resolve "Impossible de déchiffrer les messages"

Closes #1

See merge request !1