Fix API key fetch resource configuration

Author: xsveda

app/src/main/java/org/galaxyproject/sampletracker/model/galaxy/authenticate/AuthenticateResponse.java

@@ -1,15 +1,17 @@
 package org.galaxyproject.sampletracker.model.galaxy.authenticate;
 
+import com.google.gson.annotations.SerializedName;
+
 import org.galaxyproject.sampletracker.model.galaxy.AbstractResponse;
 
 /**
  * Model of response to an authentication request.
- * 
+ *
  * @author Pavel Sveda <[email protected]>
  */
 public final class AuthenticateResponse extends AbstractResponse {
 
-    private String key;
+    @SerializedName("api_key") private String key;
 
     public String getKey() {
         return key;

app/src/main/java/org/galaxyproject/sampletracker/net/galaxy/resource/AuthenticateResource.java

@@ -4,8 +4,8 @@
 
 import retrofit.Callback;
 import retrofit.RestAdapter;
+import retrofit.http.GET;
 import retrofit.http.Header;
-import retrofit.http.POST;
 
 /**
  * {@link RestAdapter} resource for authentication.
@@ -14,6 +14,6 @@
  */
 public interface AuthenticateResource {
 
-    @POST("/api/authenticate/baseauth")
+    @GET("/api/authenticate/baseauth")
     void authenticate(@Header("Authorization") String authorization, Callback<AuthenticateResponse> callback);
 }