Add faastlane folder with updated screenshots (#3617)

fastlane/metadata/android/en-US/changelogs/349.txt

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+* Introduce expert setting to perform channel discovery on local server instead of search.jabber.network
+* Enable delivery check marks by default and remove setting
+* Enable ‘Send button indicates status’ by default and remove setting
+* Move Backup and Foreground Service settings to main screen

fastlane/metadata/android/en-US/changelogs/351.txt

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+* fixes for Jingle IBB file transfer
+* fixes for repeated corrections filling up the database
+* switched to Last Message Correction v1.1

fastlane/metadata/android/en-US/changelogs/353.txt

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+* let users set their own nick name
+* resume download of OMEMO encrypted files
+* Channels now use '#' as symbol in avatar
+* Quicksy uses 'always' as OMEMO encryption default (hides lock icon)

fastlane/metadata/android/en-US/changelogs/360.txt

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+* Support for ?register and ?register;preauth XMPP uri parameters

fastlane/metadata/android/en-US/full_description.txt

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+Easy to use, reliable, battery friendly. With built-in support for images, group chats and e2e encryption.
+
+Design principles:
+
+* Be as beautiful and easy to use as possible without sacrificing security or privacy
+* Rely on existing, well established protocols
+* Do not require a Google Account or specifically Google Cloud Messaging (GCM)
+* Require as few permissions as possible
+
+Features:
+
+* End-to-end encryption with either <a href="http://conversations.im/omemo/">OMEMO</a> or <a href="http://openpgp.org/about/">OpenPGP</a>
+* Sending and receiving images
+* Intuitive UI that follows Android Design guidelines
+* Pictures / Avatars for your Contacts
+* Syncs with desktop client
+* Conferences (with support for bookmarks)
+* Address book integration
+* Multiple accounts / unified inbox
+* Very low impact on battery life
+
+Conversations makes it very easy to create an account on the conversations.im
+server. Using that server comes with an annual fee of 8 Euro after a 6 month
+trial period. However Conversations will work with any other XMPP server as
+well. A lot of XMPP servers are run by volunteers and are free of charge.
+
+XMPP Features:
+
+Conversations works with every XMPP server out there. However XMPP is an
+extensible protocol. These extensions are standardized as well in so called
+XEP’s. Conversations supports a couple of those to make the overall user
+experience better. There is a chance that your current XMPP server does not
+support these extensions. Therefore to get the most out of Conversations you
+should consider either switching to an XMPP server that does or - even better -
+run your own XMPP server for you and your friends.
+
+These XEPs are - as of now:
+
+* XEP-0065: SOCKS5 Bytestreams (or mod_proxy65). Will be used to transfer files if both parties are behind a firewall (NAT).
+* XEP-0163: Personal Eventing Protocol for avatars
+* XEP-0191: Blocking command lets you blacklist spammers or block contacts without removing them from your roster.
+* XEP-0198: Stream Management allows XMPP to survive small network outages and changes of the underlying TCP connection.
+* XEP-0280: Message Carbons which automatically syncs the messages you send to your desktop client and thus allows you to switch seamlessly from your mobile client to your desktop client and back within one conversation.
+* XEP-0237: Roster Versioning mainly to save bandwidth on poor mobile connections
+* XEP-0313: Message Archive Management synchronize message history with the server. Catch up with messages that were sent while Conversations was offline.
+* XEP-0352: Client State Indication lets the server know whether or not Conversations is in the background. Allows the server to save bandwidth by withholding unimportant packages.
+* XEP-0363: HTTP File Upload allows you to share files in conferences and with offline contacts. Requires an additional component on your server.

fastlane/metadata/android/en-US/short_description.txt

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+An encrypted, user friendly XMPP instant messaging client optimized for mobile