Merge https://github.com/griddynamics/jagger into JFG-579

Conflicts:
	webclient/src/main/java/com/griddynamics/jagger/webclient/client/SessionDataService.java
	webclient/src/main/java/com/griddynamics/jagger/webclient/client/SessionDataServiceAsync.java
	webclient/src/main/java/com/griddynamics/jagger/webclient/client/components/SessionComparisonPanel.java
	webclient/src/main/java/com/griddynamics/jagger/webclient/client/components/TagBox.java
	webclient/src/main/java/com/griddynamics/jagger/webclient/server/SessionDataServiceImpl.java
JFG-579
Merge branch 'JFG-579_TEMP' into JFG-579

Conflicts:
	webclient/src/main/java/com/griddynamics/jagger/webclient/client/SessionDataService.java
	webclient/src/main/java/com/griddynamics/jagger/webclient/client/SessionDataServiceAsync.java
	webclient/src/main/java/com/griddynamics/jagger/webclient/client/components/SessionComparisonPanel.java
	webclient/src/main/java/com/griddynamics/jagger/webclient/client/components/TagBox.java
	webclient/src/main/java/com/griddynamics/jagger/webclient/server/SessionDataServiceImpl.java
JFG-579 new search tab panel