LPS-39731

Hi Sergio,

I implemented the second proposal.

I moved the struts action into (new) ```/taglib/...``` namespace and didn't use ```/portal/...```, because all actions in /portal/ struts path namespace reside in ```com.liferay.portal``` package. ```RateEntryAction``` is in ```com.liferay.portlet.ratings``` together with service builder generated classes. 

I didn't want to move everything into ```com.liferay.portal``` or split it. Do you think it's OK? 

@rotty3000 what do you think please?

Thanks!