joomla-framework: Implemented Redis Cache Handler
joomla-framework: Redis Cache Handler - small corrections
joomla-framework: Redis Cache Handler - fix for improper checking for returned value in Cache\Redis::get()
extended test cases
joomla-framework: Redis Cache Handler - additional test cases
for setting, getting and removing multiple items
Merge pull request #234 from WooDzu/master

joomla-framework: Implemented Redis Cache Handler
Remove JFactory from Form class.

Remove JFactory from Rule\Email. Remove unique check, because it's for the CMS.

Removing SQL field type. Create a custom field type instead.

Remove Factory from Field\Timezone. Fix usage of JHtml.

Remove tests.

Remove ComboBox field type. Unused and requires media.

More cleanup
Remove FormHelper proxy methods from Form class. Restructure UT's.
Replace Mysql Driver with PDO version
Merge pull request #218 from asika32764/pdomysql

Replace MySQL driver with PDO version #82
Drop JLoader & src/import.php, move TestCaseDatabase to Joomla\Test
Move phputf8 lib to String package, replace jimport() uses
Replace JPATH_FRAMEWORK
Exclude phputf8 from PHPCS
Merge pull request #240 from mbabker/NoLoadImport

Remove Joomla autoloader
Fix merge conflicts.
Merge branch 'master' into staging
Merge pull request #238 from dongilbert/bugfix-JForm

Clean up Form Package
Fixing merge conflict