- Replace uses of deprecated Bourbon helpers with raw CSS
- Add autoprefixer into the build chain to prefix the now removed helpers
This process was achieved by running through each of the deprecation warnings and using the following bash function to replace it in all files:
```
function bourbon-deprecate() {
grep -rl "@include $1" ./frontend --exclude-dir=.git | xargs sed -i '' -E "s/@include $1[(](.*)[)]/$1: \1/g"
}
```
For some helpers, this did not result in valid CSS, so manual modifications were made.
Closes#1189#1274
* Host side panel
* Query form handles labels
* QueryComposer handles labels
* ManageHostsPage add label transitions
* Stop preventing default on click outside of ellipsis menu
* get labels from API
* use real label data in hosts side panel
* create label on label form submit
* adds platform dropdown
* Validate query text
* Label header
* validate presence of query text