Initial plugin style improved

- block buttons accommodates accessibility settings now (e.g. for bigger size, bigger accessibility buttons)
- selection disabled on .access buttons (as buttons was selectable, this was a problem to usability)
- launchATbar bottun positioned
- (always) checkbox positioned correctly now (sometimes checkbox would stay in top line while label would move to next row)
- block's message box positioned
- disabled button styles changed (background, hover, cursor, etc...)

![rediesign1](https://cloud.githubusercontent.com/assets/6906827/3005592/8121f556-dde9-11e3-98a7-678d4093d965.PNG)
![rediesign2](https://cloud.githubusercontent.com/assets/6906827/3005593/8125949a-dde9-11e3-84ef-08f779be504d.PNG)
![rediesign3](https://cloud.githubusercontent.com/assets/6906827/3005594/81294414-dde9-11e3-8053-5bbbe9c2ff03.PNG)
![rediesign4](https://cloud.githubusercontent.com/assets/6906827/3005595/812e9612-dde9-11e3-85c3-763e7a28e07d.PNG)
![rediesign5](https://cloud.githubusercontent.com/assets/6906827/3005596/8131e240-dde9-11e3-9080-6324d603a9ba.PNG)