Fixes #2159 - problem with command builder for delete with joins.
add previous exception as param
Changes introduced in #2186 reverted.
Merge pull request #2191 from resurtm/revert-chtml-changes-in-2186

CHtml changes introduced in #2186 reverted.
Register memcache.so via php-env
s/memcache/memcached/
Revert to 9a216ae3bb3a29ebd28ce8299897c72e74a75473
New go at registering the memcache extension the currently recommended way
Oh /&$/§%!&"%!!1
Remove memcached from services section
Merge pull request #2193 from DaSourcerer/travis-ci

[travis ci] Improvements to the memcache setup
Fixed error in plural rules handling

Add a rule that is always true if locale has no plural rules defined
fixes #2123
Merge pull request #2163 from odevyatkov/addParentException

add previous exception to base yii exception classes as param
CHANGELOG line for #2163
Merge pull request #2160 branch '2159-fix-delete-with-join' of https://github.com/serebrov/yii into serebrov-2159-fix-delete-with-join

* '2159-fix-delete-with-join' of https://github.com/serebrov/yii:
  Fixes #2159 - problem with command builder for delete with joins.

Conflicts:
	CHANGELOG
some adjustments to pull request #2159
reverted changes of pull request #2163

changes are not compatible with PHP <5.3