* Add intent filter for caldav(s)://, carddav(s):// and davx5:// schemes
* Define intent-filter only for standard and gplay flavors
* Merge manifest; remove Espresso tests (further tests should be added)
* Lint

Closes bitfireAT/davx5#77

Rename at.bitfire.davdroid.model to at.bitfire.davdroid.db to make clear it contains database models (and not view models)

* Service detection: update properties of already existing collections which are not in homesets
* Trigger service detection after creating a collection because the server may change properties
* jtx sync: query tasks/journals only when supported

Should fix bitfireAT/davx5#78

jtx Board sync: show whether VTODO and/or VJOURNAL components are supported by a collection; update ical4android

Co-authored-by: Ricki Hirner <hirner@bitfire.at>

* Set InputType for proxy_host and proxy_port programmatically

Since AndroidX it is no longer sufficient to simply specify
android:inputType in settings_app.xml.

* Drop custom IntEditTextPreference.kt

Doesn't appear to be necessary anymore.

Contact photos: always output JPEG (vcard4android); sync: query max-resource-size (at the moment only for debugging)

DebugInfo: provide IntentBuilder that truncates large logs/local resource dumps (should fix bitfireAT/davx5#69)

* Add option to use SOCKS proxy for Orbot
* Fix tests, add constants
* Add option for "no proxy", add migration
* Improve UI
Co-authored-by: Ricki Hirner <hirner@bitfire.at>