* use SDK level 19
* add action to all preference intents (fixes#92)
* use StrictHostnameVerifier instead of HttpsURLConnection.getDefaultHostnameVerifier() (fixes#88)
* use per-WebDavResource instead of static DavHttpClient to enable different settings for different accounts
* don't manually decode URLs for comparing (because we now always use encoded URLs)
* .ics: VERSION before PRODID
* refactoring: move WebDavResource.httpClient to new singleton DavHttpClient
* close input streams in propfind/multi-get
* version bumpt to 0.4.1
* fixed annoying bug where all imported contacts where starred
* checkbox for preemptive authentication in setup
* support for (non-preemptive) Digest authentication
* add UID when received entities don't contain one
* version bump to 0.3.2-alpha
* build.xml for ant/Fdroid