Corrections on creating a topic in branch
Merge remote-tracking branch 'origin/master'

Conflicts:
	functional-tests-jcommune/src/test/java/org/jtalks/tests/jcommune/TopicTest.java
	functional-tests-jcommune/src/test/resources/testng-develop.xml
	functional-tests-jcommune/src/test/resources/testng1.xml
	jcommune-webdriver/src/main/java/org/jtalks/tests/jcommune/webdriver/topic/Topics.java
Merge remote-tracking branch 'origin/master'
Merge remote-tracking branch 'origin/master'
#JC-1159

Added checking sign-in form validation.
Removed sign-in operation checking by profile link existence.