= Aperture Configuration Service =

Basically, we need a gui to add datasources, remove them and configure them.

Also, the crawling behaviour is needed to be configured (crawl every X minutes, etc) (#171)

 * Edit datasource config 
   * add datasources
   * remove datasources (including crawled resources from ResourceStorage)
   * edit datasources config (including deleting crawled resources)
 * Edit crawling behaviour - when, what to crawl

A list of all datasources is ApertureDatasources.

= Deleting a datasource =
When you delete a data source, the data that was crawled from this source has to be removed from the repository. Therefore, the ApertureSynchroniser has to be informed about this fact and act accordingly. 

= auto-configuration and datasource discovery =

As detailed in UseCaseInstallationGnowsisFindsMyStuff We need a way for aperture to locate possible datasource.
ticket:147 is assigned to hack this.

This is a bit tricky since it's:

   1. Platform dependent
   2. Very different for different datasources 

In a way, each datasource implementation should have a method "find"/"location"/"isAvailable" or similar...

    * FileSystem? - this is easy - we just point it at "My Documents" or "/home/username/"
    * Thunderbird - again, if the user has a $HOME/.mozilla-thunderbird directory. This changes in different versions of thunderbird... (what version do we rely on anyway?)
    * Firefox - same
    * Outlook - i know nothing.
    * ? 

Maybe this could be a separate ticket for each one?