Bump NPM package versions in `package.json`
"grunt-contrib-cssmin": "~0.7.0" -> "~0.9.0" http://npmjs.org/package/grunt-contrib-cssmin
"grunt-contrib-uglify": "~0.3.0" -> "~0.4.0" http://npmjs.org/package/grunt-contrib-uglify
"grunt-contrib-watch": "~0.5.3" -> "~0.6.1" http://npmjs.org/package/grunt-contrib-watch
"grunt-contrib-jshint": "~0.8.0" -> "~0.9.2" http://npmjs.org/package/grunt-contrib-jshint
"grunt-sass": "~0.10.0" -> "~0.12.0" http://npmjs.org/package/grunt-sass
* Requires `npm install` to update packages and dependencies
* Props netweb. See #2542

git-svn-id: https://bbpress.svn.wordpress.org/trunk@5328 9866e705-20ec-0310-96e7-cbb4277adcfb
Add `separate_items_with_commas` string in `bbp_get_topic_tag_tax_labels()`.

git-svn-id: https://bbpress.svn.wordpress.org/trunk@5329 9866e705-20ec-0310-96e7-cbb4277adcfb
Remove stray semi-colon.

git-svn-id: https://bbpress.svn.wordpress.org/trunk@5330 9866e705-20ec-0310-96e7-cbb4277adcfb
Fix incorrect phpdoc in users functions.

git-svn-id: https://bbpress.svn.wordpress.org/trunk@5331 9866e705-20ec-0310-96e7-cbb4277adcfb
SMF Importer BBCode regex expressions 
* Fix copy pasta `<br>`/`<tt>` regex
* Add non-break space `&nbsp;` to space ` ` rexex
Props mspecht. Fixes @2558


git-svn-id: https://bbpress.svn.wordpress.org/trunk@5332 9866e705-20ec-0310-96e7-cbb4277adcfb