Fixed issue #09261: emailstatus not filled by default when using remotecontrol invite_participants
Dev: move default value to OK to models BUT : this disallow empty string : is this OK ?
Dev: for token : use 'caseSensitive'=>false can be done, but only for mySQL
Dev: add unknow error (from rules) after import token and tracevar the errors
Merge pull request #223 from Shnoulle/master_fix09261

Dev : merged Fixed issue #09261: emailstatus not filled by default when using remotecontrol invite_participants