fix(select): prefix attributes with 'w11k-select' to make IE happy again

IE has a problem with the 'disabled' attribute on the element containing the 'w11k-select' directive. The attribute prevents the drop-down-content from scrolling its overflow.

BREAKING CHANGE:
All attributes used by 'w11k-select' directive has to be prefixed with 'w11k-select-' now.

Use
```
<div w11k-select
     w11k-select-multiple="true"
     w11k-select-disabled="disabled"
     w11k-select-options="option.value as option.label for option in options.data"
     w11k-select-placeholder="'All'"
     w11k-select-filter-placeholder="'Filter'"
     w11k-select-required="false"
     ng-model="selected.data"
     name="demoField"
     >
</div>
```

instead of
```
<div w11k-select
     multiple="true"
     disabled="disabled"
     options="option.value as option.label for option in options.data"
     placeholder="'All'"
     filter-placeholder="'Filter'"
     required="false"
     ng-model="selected.data"
     name="demoField"
     >
</div>
```
doc(demo): adjust directive usage to prefixed attributes
chore(project): bump version to 0.3.5
docs(changelog): update changelog for 0.3.5
Merge branch 'hotfix/0.3.5'