Realm backend (#148)

* Removed no longer needed Audit files - will be replaced by single Realm file
* Added Realm file

* Replaced services to get data from Realm database

* Updated NuGet packages

* Display speaker basic info

* Added fix for netstandard/android. See dotnet/android#1162 (comment)

* Display meetups, backend fixes

* Fix build in App Center

* Display speaker details

* Simplified getting talks for speaker by leveraging Realm backlink property

* Replaced all manual queries with backlinking

* Added friend logos

* Now app displays all Audit information based on Realm database

* Replaced all entity service with realm service using automapper

* Attempt to fix App Center build

* Cleaning up, bugfixes

* Updated .gitignore

* Added missing Realm file, part I

* Removed obsolete directories

* Attempt to fix Android build in App Center

* Attempt to fix App Center build #3

* Attempt to fix iOS build

* Cleaning up, increased app version to 1.1.0

* Attempt to fix iOS build #2

* Attempt to fix iOS build #3

* Rolled back to Android SDK 8.0 due to App Center issues

* Cleaning up - added TwitterService & LanguageService

* Android: rolled back Target Framework to Android 8.0 to fix App Center build

* Fixed images on speakers page

* Fixed displaying speaker avatars on Meetup page

* Fixed displaying Friends logos

* Removed small speaker avatar

.gitignore

@@ -93,9 +93,6 @@ ipch/
 *.vspx
 *.sap
 
-# TFS 2012 Local Workspace
-$tf/
-
 # Guidance Automation Toolkit
 *.gpState
 
@@ -192,8 +189,6 @@ _pkginfo.txt
 
 # Others
 ClientBin/
-~$*
-*~
 *.dbmdl
 *.dbproj.schemaview
 *.jfm
@@ -274,10 +269,6 @@ paket-files/
 __pycache__/
 *.pyc
 
-# Cake - Uncomment if you are using it
-# tools/**
-# !tools/packages.config
-
 # Telerik's JustMock configuration file
 *.jmconfig
 
@@ -286,3 +277,4 @@ __pycache__/
 *.btm.cs
 *.odx.cs
 *.xsd.cs
+/DotNetRu.DataStore.Audit/Audit.realm.lock