fix(typeahead): hide on blur when item was hovered
fix(typeahead): hide on blur when item was hovered

fixes #1495

valor-software/ngx-bootstrap,macroorganizm/ng2-bootstrap,macroorganizm/ng2-bootstrap,buchslava/angular2-bootstrap,valor-software/ngx-bootstrap,sublime392/ng2-bootstrap,erodriguezh/ngx-bootstrap,sublime392/ng2-bootstrap,valor-software/ng2-bootstrap,buchslava/angular2-bootstrap,valor-software/ngx-bootstrap,valor-software/ngx-bootstrap,IlyaSurmay/ngx-bootstrap-versioning,buchslava/angular2-bootstrap,Le0Michine/ng2-bootstrap,valor-software/ng2-bootstrap,macroorganizm/ng2-bootstrap,IlyaSurmay/ngx-bootstrap-versioning,felixkubli/ng2-bootstrap,Le0Michine/ng2-bootstrap,felixkubli/ng2-bootstrap,felixkubli/ng2-bootstrap,sublime392/ng2-bootstrap