misc: unify terminology

8+3 filename → 8.3 filename
be ware → beware
{cannot, can not, can't, could not, couldn't} → unable to
familly → family
file name → filename
informations → information
plateform → platform
trial → attempt
trying to → attempting to
{web-server, webserver} → Web server

Change-Id: I33b1a0091b5af4f0f055bd4c21b2a05a39adbc50
GitLab: jami-client-qt#1730