Add catalan translations
Merge pull request #213 from pokoli/catalan_translation

Add catalan translations – thanks @pokoli
Escape reserved caracters on catalan translation to do not break the build
Merge pull request #214 from pokoli/catalan_translation

Escape reserved caracters on catalan translation to do not break the build
SNI support for Android <4.2, too (see issue #9)
Version bump to 0.5.11-alpha
Retain unknown VCard properties, ez-vcard update, handle stale connections

* store unknown VCard properties in an extra column and load them when generating a new VCard (closes #118)
* upgrade to ez-vcard/0.9.3 (fixes sync error reported via Play Store)
* (re-)enable stale collection check, RetryHandler to retry idempotent CalDAV/CardDAV requests (hopefully fixes #225)
* always set FN/display name (take organization if no structured name is available) (hopefully fixes #227)
don't close httpClient while syncing
Read non-high-res photos, too (fixes #53 again); remove stale connection check because RetryStrategy should be enough
Version bump to 0.5.12
Enable all supported TLS protocols (enables TLSv1.1/1.2 if supported by Android version on device, see #229)
Support HTTP(S) proxies (closes #232)
Make server URL, user name and password horizontally scrollable (fixes
#241)
Debug settings

* preference screen for debug settings
* allow to disable HTTP compression
* verbose network logging only when activated
* single HttpClient for all threads (before: single HttpClient per adapter)
* bump version to 0.5.13-alpha
Debugging improvements

* force debugging options for resource detection (because there's no way to turn them on until there's an account)
* provide "report issue" button in debug settings
* provide CONTRIBUTING.md, including instructions on how to report issues
* increase socket timeout from 20 to 45 seconds (hopefully fixes #237)
* previous commit: increase total simultaneous connections to 3 (2 per host)
Ignore crappy unknown properties with illegal syntax (see issue #118)
Better invalid VCard handling

* ignore unknown properties which have invalid syntax instead of crashing
* log validation warnings for created VCards
* add VCard tests
Various upload changes

* fix issue when first upload fails (fixes #233)
* show debug settings menu item in main activity
* update ETag in local database when a PUT request returns an updated ETag, meaning that
  locally created/updated records won't be downloaded from the server immediately after the upload
Version bump to 0.5.14-alpha

* added some documentation (JavaDoc)
* CTags are not cached in LocalCollection anymore
* added CTag test for LocalCalendar
Allow only one anniversary to comply with VCard 4 (fixes #277)