Use https links for davdroid.bitfire.at
Fiddling around with UI again and again and again … hoping for console-only mobile phones one day (fixes #386)
Merge remote-tracking branch 'main/master'
Migrated to Android Studio/gradle

* moved all dependencies to gradle instead of shipping .jar files in the app/lib directory
* switched to official Android port of HttpClient instead of httpclientandroidlib
* new .gitignore and project files
Merge remote-tracking branch 'origin/master' into android-studio

Conflicts:
	.gitignore
Merge with origin/master
Remove Debug settings activity

* remove debug settings activity; logging can now be enabled via adb setprop, since that's the default way of enabling verbose logs in HttpClient's Android flavour and adb is required for viewing the logs anway
* update i18n accordingly
Re-enable tests again
shrink bytecode with ProGuard for both debug/release builds (closes #202)

* enable ProGuard for debug builds because real-life testing is done with debug builds
version bump to 0.6.9

* fix i18n
Use HttpClient HC4 classes whenever possible (instead of stock Android HttpClient 4.0-beta classes); reorganize imports
Temporarily use patched version of HttpClient-Android 4.3.5 to avoid Basic Authorization bug
Minor code tweaks (by lint)
Handle relative URIs with ":" in path names correctly
Mention used Apache HttpClient Android port
Repair some common invalid URLs, version bump to 0.6.9. invalid URLs, version bump to 0.6.9.1
Merged 0.6.9
Updated MTM
Merge branch 'master' of https://github.com/rfc2822/davdroid

Merged 0.6.9.1