Merge pull request #8 from oiuweirwe/master

Don't fail the add if the same document already exists.
Support for anonymous statistic (needs dependency perl-JSON) in crawl_watch. More dependencies to the devel package. Added setups of rpm build environment for the devel package.
Stop and starts crawl_watch during build.
If we have more than 50 collections we won't lookup the size of the collection, nor ajax to refresh the view. If we do the administrators browser may be bogged down trying to fetch a lot of data every 3 seconds.
Merge commit 'upstream/master'
Fixed bug where we allocated a fix size buffer for holding all collections names for a user. If we had more collection they would not be included in the search.