#307 JIRA configuration migration - collecting information
#307 JIRA configuration migration - actual migration code
#307 JIRA configuration migration
#307 JIRA configuration access is protected
#307 JIRA configuration extension is no longer visible
#307 Refactoring of the `toHtml` method for the property descriptors in order to include the reference to the holding entity
#307 Removing the use of `JIRAConfigurationExtension` from `JIRAIssuePropertyExtension`
#307 Removing the use of `JIRAConfigurationExtension` from `DefaultJIRAService` - wip
#307 JDK7 refactoring
#307 SVN indexation work-around, waiting for #306 to be complete.
#307 Removing the use of `JIRAConfigurationExtension` from `DefaultJIRAService` - wip - big issues with SVNExplorer and the fact that a search on any issue can be performed (or on any revision). Some methods must now return several results, linked to projects.