Updated default value of db dialect class
[2.0.0] fix #2401: cache for aggregating model methods
[2.0.0] added test for aggregating functions' cache
Merge pull request #2727 from maxgalbu/2.0.0_aggregators_cache

[2.0.0] Fix aggregate functions cache
Enabling php-tests
Merge branch '2.0.0' of https://github.com/phalcon/cphalcon into 2.0.0
Fix Cache\Backend\File
Merge branch '2.0.0' of https://github.com/phalcon/cphalcon into 2.0.0
Using latest Zephir, fixing view caching, enabling tests
Removing final constructor in Di\Service
Creating unit-tests/cache if it does not exist
Mark Di\Service constructor as final
Fixing storing of meta-data in cache, fixing optional param in Security
Fixing models meta-data, enabling more tests
Fixing bugs in Mvc\Model\MetaData
Fixing bugs in Mvc\Model\MetaData
Merge pull request #2718 from karakurihiden/2.0.0-db-default

default value of db dialect class
Assets, resource improvements, #2635 is unnecessary now
Assets, initial support for inline code #2657, fix minification when Join is false #2230
Assets, apply filters fix