Update demo case

[walkingice]

• make the demo page responsive
• add case to demo connected-list feature

instead of using hard-coded style, involve bootstrap responsive design.

[coveralls]

Coverage remained the same when pulling ca52269 on walkingice:master into 57c5332 on angular-ui:master.

[thgreasi]

Sorry it took me so long to respond and thanks for this commit 👍
Is there a reason that the log title was removed from the .logList?

 .logList:before {
-   content: 'log';
-   padding: 0 5px;
-   position: relative;
-   top: -1.1em;
    background-color: #FFF;
 }

In my tests the new fitting value for top should be about -1.7em.
If you insist on your changes, then please remove .logList:before altogether.

[thgreasi]

Also please note (I don't know if it is intentional), that the user will be able to drag elements from the "connected lists" to the "simple list".
I would prefer adding a unique class per example case container/section/row and scoping the connectWith css selector like: '.connectedListsExample .list'.