Changed

Added

Added setOptions, addOption and getOptions to select property in Style Manager #1215
Added the possibility to output custom attributes in toHTML method
Added the possibility to avoid clearing styles in CSS export
Added stopPropagation in ComponentTextView on dblclick event
Added activate and select options to Block models
Added onAll method to Component model. Executes a callback on any inner component
Added resetId method on Component and resetId propperty on Block model
This allows to reset id of the component and its binded css rules.
This comes handy when you use ids inside you blocks
```
<div id="some-id"></div>
<style>
  #some-id {
    ...
  }
</style>
```
Technically speaking, Blocks are reusable and IDs are not, so this will cause a problem.
So with this new option, IDs will be changed automatically inside all dropped components
```
blockManager.add('some-block', {
  resetId: true,
  content: `<div>...`
})
```

Trigger end move for all dropped models. Closes #1196
Don't trigger component:remove when a component is just deselected. Fixes #1219