Fixed AR-1321: Allow '&' in filename

The following filename is valid now: "x ¬ £ % & + ; x.txt"
This was a restriction imposed by WebDAV, but the encoding of the repsonses is working well and these restrictions be removed as a result.

Fixed AR-1281: WebDAV upload was assigning incorrect encoding

I added a bean 'charset.finder', which can be fetched from the MimetypeService.
Various pluggins now exist to decode a stream and figure out what the encoding is.
WebDAV and CIFS/FTP are now hooked into this so that they guess a little better.

Fixed others:
Added retrying transactions to WebDAV.
Read/write transactions for WebDAV.


git-svn-id: https://svn.alfresco.com/repos/alfresco-enterprise/alfresco/HEAD/root@6073 c4b6b30b-aa2e-2d43-bbcb-ca4b014f7261

config/alfresco/content-services-context.xml

@@ -94,9 +94,12 @@
     </bean>
 
    <bean id="mimetypeService" class="org.alfresco.repo.content.MimetypeMap" init-method="init" >
-      <constructor-arg>
+      <property name="configService">
          <ref bean="mimetypeConfigService" />
-      </constructor-arg>
+      </property>
+      <property name="contentCharsetFinder">
+         <ref bean="charset.finder"/>
+      </property>
    </bean>
    
    <bean id="contentFilterLanguagesConfigService" class="org.alfresco.config.xml.XMLConfigService" init-method="init">