re-run those tests.

- Updated benchmark.jmx file for performance toolkit to incorporate
  changes including randomization of categories and fixes to cache
  management.

- changing way string append is done.

 - fixed code style

 - fixed code mess

-  adding fully qualified namespace to resolve L3 errors

- Changed regex to simple str_replace.
- Added explanation comment

- Fixed problem with escaping in csv files.

- fixed code style

- added checking for first index

MAGETWO-48175: [Github]: Upgrading M2 is confusing - not clear need to login first to magento.com #3059

 - Minor wording change on enter credentials page
 - add controller unit test
 - avoid js exception if no versions found

MAGETWO-48175: [Github]: Upgrading M2 is confusing - not clear need to login first to magento.com #3059

 - Remove unused title string
 - avoid flashing logo when skipping credentials page

MAGETWO-48175: [Github]: Upgrading M2 is confusing - not clear need to login first to magento.com #3059

 - update MP credential popup with new wording

MAGETWO-48175: [Github]: Upgrading M2 is confusing - not clear need to login first to magento.com #3059

 - remove unused variables, cleanup

- fixed unittests

MAGETWO-48175: [Github]: Upgrading M2 is confusing - not clear need to login first to magento.com #3059

 - Fix code format errors

MAGETWO-48175: [Github]: Upgrading M2 is confusing - not clear need to login first to magento.com #3059

 - Check for git-clone instances first and display error
 - Only show form to enter creds when necessary

MAGETWO-48175: [Github]: Upgrading M2 is confusing - not clear need to login first to magento.com #3059

 - Allow upgrading if one package is available with versions

MAGETWO-48175: [Github]: Upgrading M2 is confusing - not clear need to login first to magento.com #3059

 - Update instructions to get access keys
 - Add missing errors variable

MAGETWO-48175: [Github]: Upgrading M2 is confusing - not clear need to login first to magento.com #3059

 - Inital implementation, add page to upgrade flow that prompts for keys if not available

- Reduced client side prolong request interval to every 25 seconds
- Updated logic to set correct cookie path for admin cookie

changed exception

- Corrected error phrase.

- No need to add slashes now that we do not do eval.

- skipping writable checks for symlinked files/folders

- Fixed regex of static test.

- Removed eval statement from phrase parser.

- static fixes.

- CR related changes
- removing use of event theme_registration_from_filesystem
- deprecating classes and tests that are observers for above event.
- added tests