ECMS-6160 Page with clv portlet is blank

Analysis:
- When migrating data from 4.0 -> 4.1, ApplicationTemplateManagerServiceImpl is started twice. First time made templates marked "Don't change". This causes second time (upgradeplugin WCMTemplateUpgradePlugin running inside) can not reinitialize ver4.1 templates

Solution:
- In upgrade plugin, remove "Don't change" marks to allow templates reinitialization