Add exception class for errors. Set error strings as a Android resource (for localization)

src/fr/unix_experience/owncloud_sms/exceptions/OCSyncException.java

@@ -0,0 +1,18 @@
+package fr.unix_experience.owncloud_sms.exceptions;
+
+public class OCSyncException extends Exception {
+	/**
+	 * Serial, generated by Eclipse to be compliant with JAVA
+	 */
+	private static final long serialVersionUID = -4277316598892180792L;
+
+	public OCSyncException(int errorId) {
+		_errorId = errorId;
+	}
+	
+	public int getErrorId() {
+		return _errorId;
+	}
+
+	private int _errorId;
+}