Move CoreAliasDialogModel classes.

Depends-On: I2905dd1596fad47d0c7beaa669331063b48bd305
Change-Id: I7ee9ec39fce785b8e374e50fd05f0ef824097ab0
Reviewed-on: http://gerrit.dmdirc.com/3587
Automatic-Compile: DMDirc Build Manager
Reviewed-by: Chris Smith <chris@dmdirc.com>
Update submodules: plugins (new commits)

plugins:
    2ae4701 Greg Holmes <greg@dmdirc.com>
            Move CoreAliasDialogModel classes.

            Depends-On: I7ee9ec39fce785b8e374e50fd05f0ef824097ab0
            Gerrit: http://gerrit.dmdirc.com/3588

Change-Id: Ie85ebb287c8faab768d8de5cb873925482537115