NuCivic/nucivic-internal#230 Adding regex to escape multi words strings

NuCivic/nucivic-internal#230

### Acceptance test
- [ ] git pull
- [ ] run dkan_dataset.make
- [ ] Go to a resource
- [ ] Change a parameter whose value is a string with two or more words
- [ ] Then all the spaces in the value should be replaced by underscores, preceded by a exclamation sign (!) and without quotes in the url.