ALGEBRA - TODO
<div class="container-fluid" ng-controller="algCrtl">
    <br>
    <div class="row">
        <div class="col-xs-10">

            <div class="row">
                <h3>Lista argomenti</h3>
                <div class="list-group">
                    <a href="#" class="list-group-item">First item</a>
                    <a href="#" class="list-group-item">Second item</a>
                    <a href="#" class="list-group-item">Third item</a>
                </div>
            </div>    

            <div class="row">
                <h3>Argomento: lalalala</h3>
                <h3>Testo:</h3>
                <p>Selezionare le barche di colore yeellooowwww</p>
            </div>

            <div class="row">
                <div class="btn-group" role="group" aria-label="toolbarAlg">
                    <button class="btn btn-success btn-sm" ng-click="addOpAlg('∪')">∪</button>
                    <button class="btn btn-success btn-sm" ng-click="addOpAlg('∩')">∩</button>
                    <button class="btn btn-success btn-sm" ng-click="addOpAlg('-')">-</button>
                    <button class="btn btn-success btn-sm" ng-click="addOpAlg('÷')">÷</button>
                    <button class="btn btn-success btn-sm" ng-click="addOpAlg('×')">×</button>
                    <button class="btn btn-success btn-sm" ng-click="addOpAlg('⋈')">⋈</button>
                    <button class="btn btn-success btn-sm" ng-click="addOpAlg('⧑')">⧑</button> 
                    <button class="btn btn-success btn-sm" ng-click="addOpAlg('⧒')">⧒</button>
                    <button class="btn btn-success btn-sm" ng-click="addOpAlg('⧓')">⧓</button>
                    <button class="btn btn-success btn-sm" ng-click="addOpAlg('σ')">σ</button>
                    <button class="btn btn-success btn-sm" ng-click="addOpAlg('π')">π</button>
                    <button class="btn btn-success btn-sm" ng-click="addOpAlg('ρ')">ρ</button>
                </div>
            </div>

            <br> 

            <div class="row">
                <form>
                    <fieldset class="form-group">
                        <input type="text" class="form-control input-xsmall" id="queryAlg" placeholder="Inserisci la query in algebra relazionale..." ng-model="queryAlg">
                    </fieldset>
                    <button type="submit" class="btn btn-primary">Invia</button>
                </form>
            </div>
        </div>
    </div>
</div>



Add a static list group (next step populate by DB). Add the toolbar with alg operation and add input form for insert query.
Add a static list group (next step populate by DB). Add the toolbar with alg operation and add input form for insert query.
