[WIP] Resource file and include changes as well as new control icons for wizard slide buttons

Signed-off-by: Dominique Fuchs <32204802+DominiqueFuchs@users.noreply.github.com>

client.qrc

@@ -27,8 +27,6 @@
         <file>resources/confirm.svg</file>
         <file>resources/copy.svg</file>
         <file>resources/state-sync.svg</file>
-        <file>resources/next.svg</file>
-        <file>resources/previous.svg</file>
         <file>resources/add.png</file>
         <file>resources/state-info.svg</file>
     </qresource>

src/gui/wizard/owncloudsetupnocredspage.ui

@@ -485,7 +485,6 @@
  </customwidgets>
  <resources>
   <include location="../../../theme.qrc"/>
-  <include location="../../../client.qrc"/>
  </resources>
  <connections/>
 </ui>

theme.qrc

@@ -43,7 +43,7 @@
         <file>theme/white/state-sync-64.png</file>
         <file>theme/white/state-sync-128.png</file>
         <file>theme/white/state-sync-256.png</file>
-        <file>theme/black/state-error-32.png</file>
+		<file>theme/black/state-error-32.png</file>
         <file>theme/black/state-error-64.png</file>
         <file>theme/black/state-error-128.png</file>
         <file>theme/black/state-error-256.png</file>
@@ -79,6 +79,8 @@
         <file>theme/colored/state-warning-64.png</file>
         <file>theme/colored/state-warning-128.png</file>
         <file>theme/colored/state-warning-256.png</file>
+        <file>theme/black/control-next.svg</file>
+		<file>theme/black/control-prev.svg</file>
         <file>theme/black/state-error.svg</file>
         <file>theme/black/state-error-16.png</file>
         <file>theme/black/state-offline.svg</file>
@@ -99,6 +101,8 @@
         <file>theme/black/state-warning-64.png</file>
         <file>theme/black/state-warning-128.png</file>
         <file>theme/black/state-warning-256.png</file>
+		<file>theme/white/control-next.svg</file>
+		<file>theme/white/control-prev.svg</file>
         <file>theme/white/state-error.svg</file>
         <file>theme/white/state-error-16.png</file>
         <file>theme/white/state-offline.svg</file>