#JC-1869: Corrected tooltips
#JC-1869: Fixed remarks
 *Now ReadOnlySecurityService Returns Anonymous user instead of null when user not logged in
*JCUser.copyUser method now performs deeper coping
 *Added unit tests
 *CreateTopicBtnDtoComparator now compares objects with same order value by id
#JC-1869: Plugin property explanation moved to tooltip
*Added new column HINT into PLUGIN_PROPERTY table. Now tooltip text stores in this column
*Added possibility view tooltip on span element when it hovered
#JC-1869: Fixed remarks:
*labels names lowercased
*PluginController#getModel refactored
*Added unit tests for QuestionsAndAnswersPlugin
Merge branch 'master' of github.com:jtalks-org/jcommune

Conflicts:
	jcommune-plugins/questions-n-answers-plugin/src/main/java/org/jtalks/jcommune/plugin/questionsandanswers/QuestionsAndAnswersPlugin.java
#JC-1869:Merge conflicts resolution
Merge branch 'JC-1869_QuestionsPermissions'

Conflicts:
	jcommune-plugins/questions-n-answers-plugin/src/main/java/org/jtalks/jcommune/plugin/questionsandanswers/QuestionsAndAnswersPlugin.java