Fix ticket mail dropping bug when author does not have an address
Merged #132 "Ticket notifications aren't sent when the author doesn't have an email address"
Expose setting to control Lucene repository indexing frequency
Merged #161 "Allow Lucene indexing period to be configurable"
Allow LDAP to reset/delete an user email address value
Merged #134 "LDAP user accounts will not reset/clear the email address"
Improve bad request handling in branch graph, zip, & syndication servlets
Merged #169 "Do not display stacktraces for bad requests in servlets"
Include all users with RW access in New Ticket responsible choices
Merged #170 "New ticket reponsible selections are missing users with RW access"
Fix potential NPE in TicketListPanel due to missing repository
Fix value discarding bug in SafeTextModel
Merged #171 "Fix potential NPE in TicketListPanel due to missing repository"
Merged #172 "Fix value discarding bug in SafeTextModel"
Fix MigrateTickets failure for view-restricted repositories
Merged #173 "Fix MigrateTickets failure for view-restricted repositories"
Fix repository deletion bug where the Lucene ticket index was not purged
Merged #174 "Fix repository deletion bug where the Lucene ticket index was not purged"
Repository url is now r

The previous 'triggerUrl' version causes a response similar to 'No git jobs using repository: http://gitblit-host/gitblit/git/repo.git'. The wroking url is 'http://gitblit-host/gitblit/r/repo.git'.
I also added brackets to improve readability
Merged #175 "Repository url is now r"