Fix listing_main_file_size_widget when JSFOptim disabled

1) retrieve nuxeo 8.2 sources
2) go to the nuxeo-sample-project folder
3) patch with patch -p1 -i NXP-19753-BUG-nuxeo-sample-project-release-8.2-main_file_size_listing-widget-broken.patch (attached)
4) mvn clean install
5) stop 8.2 server
6) copy target/nuxeo-sample-project-8.2.jar to $NX8_HOME/nxserver/bundles
7) start the server
8) in studio, go to Listings & Views / Content View / DefaultContentListingInNavigation
9) go to Results tab
10) in Additional Results Column, add widget Main File Size
11) click Save
12) on the server in Admin / Update Center / Nuxeo Studio, click Update
13) in Workspace create a Workspace named testOptimWorkspace
14) create a Folder named testFolder
15) create 2 or 3 files with a main attachment
16) on the testFolder content view click Edit Results Columns and add the Main File Size column
17) main file size is now displayed
18) stop the server
19) go to the nuxeo-sample-project folder
20) edit src/main/resources/OSGI-INF/configuration-contrib.xml and comment the following lines:

<property name="nuxeo.jsf.listings.useRepeatRenderTime">false</property>
<property name="nuxeo.jsf.actions.removeActionOptims">true</property>

21) mvn clean install
22) copy target/nuxeo-sample-project-8.2.jar to $NX8_HOME/nxserver/bundles
23) start the server
24) update as in step step 12
25) add size column as in step 16
26) the size column is not displayed and no error either in the UI or in the logs

Notice it works fine with the common:Size attribute which uses the widget Integer.