Update Deps + Cleanup (#1158)

* Fix Typo

* Update build.gradle

* Update Deps

* Update Tests

* Fixes Tests

Without this some tests fail on my PC...

+ also:
"Put this in your gradle.properties:

android.enableUnitTestBinaryResources=true"
from http://robolectric.org/migrating/#project-configuration

* Make everything private

* Fix Warning

* Update TimelineFragment.java

* Update build.gradle

* Update gradle-wrapper.properties

* Update gradle-wrapper.properties

* Update gradle-wrapper.properties

* Fix Compile Errors

e.g.

Type inference failed. Expected type mismatch: inferred type is Preference? but Preference was expected

Type inference failed. Please try to specify type arguments explicitly.

* fix crash

* Grandle Wrapper 5.3

* Revert "Fix Compile Errors"

This reverts commit 4a774a4fe3ce82c84bd7b4d78e1a1c64af97cd0d.

* requirePreference

* oops

* Cleanup

* Update gradle-wrapper.properties

app/src/test/java/com/keylesspalace/tusky/fragment/TimelineRepositoryTest.kt

@@ -39,23 +39,23 @@ class TimelineRepositoryTest {
     lateinit var mastodonApi: MastodonApi
 
     @Mock
-    lateinit var accountManager: AccountManager
+    private lateinit var accountManager: AccountManager
 
-    lateinit var gson: Gson
+    private lateinit var gson: Gson
 
-    lateinit var subject: TimelineRepository
+    private lateinit var subject: TimelineRepository
 
-    lateinit var testScheduler: TestScheduler
+    private lateinit var testScheduler: TestScheduler
 
 
-    val limit = 30
-    val account = AccountEntity(
+    private val limit = 30
+    private val account = AccountEntity(
             id = 2,
             accessToken = "token",
             domain = "domain.com",
             isActive = true
     )
-    val htmlConverter = object : HtmlConverter {
+    private val htmlConverter = object : HtmlConverter {
         override fun fromHtml(html: String): Spanned {
             return SpanUtilsTest.FakeSpannable(html)
         }