fixe nginx location rule for _mapping

If you use a nginx proxy and elasticsearch with log4j you can see the following error message:

```
Error No index found at http://my.domain.local:80/logstash-2014.02.26/_mapping/field/*. Please create at least one index.If you're using a proxy ensure it is configured correctly.
```
Thats because the strict nginx location mapping rule.
Merge pull request #1018 from rashidkpc/master

Switch to mapquest open tile server. Closes #1016
Switch to mapquest open tile server. Closes #1016
Switch filter to terms, re: #1019
Merge remote-tracking branch 'upstream/master'
Change sort to _score by default, Remove drop placeholders except when row is empty
Removing extranous span12 when field list is collapsed
Add tutorials, change clean to not remove entire docs dir
Merge remote-tracking branch 'ccowan/feature/table-overflow-fix'
More docs
Fix daylight savings time bug
more docs
Removed undocumented panel.height, remove Math.floor from panel spans
Fixing IE Annotations

- Adding class for histogram-marker
- Adding immage for annotations
- Modifying jquery.flot.events to accept an image for an annotation
- Changing annotations to use histogram-marker
Removed undocumented panel.height, remove Math.floor from panel spans
Merge remote-tracking branch 'upstream/master'
More docs
Remove .DS_Store
Update docs to remove line comments
Merge remote-tracking branch 'upstream/master' into docs