added test - RemoveTopicAndSubscribers
Merge branch 'master' of https://github.com/jtalks-org/functional-tests

Conflicts:
	jcommune-webdriver/src/main/java/org/jtalks/tests/jcommune/webdriver/action/Topics.java
	jcommune-webdriver/src/main/java/org/jtalks/tests/jcommune/webdriver/entity/topic/Topic.java