Oracle unit tests DDL and DML revisited.
Oracle unit tests: "type" table added.
Oracle unit tests almost works. Dirty working draft ready.
COciTest: added asserting empty column comments.
Merge branch 'master' of git://github.com/yiisoft/yii into oci-unit-tests

Conflicts:
	CHANGELOG
COciTest: pagination (LIMIT + OFFSET alternative) asserts.
COciTest: explaining comments and CS issues.
COciTest: temporary removed problem places.
COciTest: common credentials.
Oracle unit tests removed from travis. [ci skip]
Oracle unit tests removed from travis.
added visible option for CButtonColumn
fixed intendation
Code intending at "CClientScriptTest" has been fixed.
Method "CClientScript::registerMetaTag()" allows duplication of meta tags.
Doc comment for "CClientScript::registerMetaTag()" has been updated.
Issue #1351 has been added to CHANGELOG.
changelog order
missing colon
need to move beforeFindInternal() after adding scopes

fix #1102 was not 100% correct as it was not possible to apply
additional scopes in relation definition and query criteria.
Merge pull request #1354 from cebe/1102-fix-beforeFind-scopes

need to move beforeFindInternal() after adding scopes