fix(sortable): Changed reference to BrowserModule to CommonModule instead (#1503)
fix(sortable): Changed reference to BrowserModule to CommonModule instead (#1503)

* Library Modules should not import BrowserModule anywhere

Caused error: 
`BrowserModule has already been loaded. If you need access to common directives such as NgIf and NgFor from a lazy loaded module, import CommonModule instead.`

After trying on lazy loaded app, that had `Ng2BootstrapModule.forRoot()` imported in root App Module.

* changed code styling to be consistent with the rest

Hopefully it will pass CI tests now!

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