[ticket/297] Enable ext sniffer

B3P-297
[ticket/297] Rename version_check method to check to prevent 2nd constructor

B3P-297
Merge pull request #298 from marc1706/ticket/297

[ticket/297] Enable codesniffer again
[ticket/299] Add tests for phpbb_fetch_posts

B3P-299
[ticket/299] Fix calendar module test

B3P-299
[ticket/299] Add missing sql_exists to fetch_news_test

B3P-299
Merge pull request #300 from marc1706/ticket/299

[ticket/299] Add tests for phpbb_fetch_posts