Better support for using field names and rule parameters in error messages.
Merge branch 'refs/heads/develop' into feature/form_error_msgs
Merge branch 'develop' of https://github.com/EllisLab/CodeIgniter into feature/form_error_msgs
Add mobile detection to robot user agents.
Merge branch 'develop' of https://github.com/EllisLab/CodeIgniter into feature/form_error_msgs

Conflicts:
	system/language/english/form_validation_lang.php
Fix a merge oopsie in the language file.
Combine this feature with Fix Issue #935 in another pull request.
Some micro-optimizations
Remove 'services' directive from .travis.yml

According to the Travis docs at http://about.travis-ci.org/docs/user/database-setup/,
mysql and postgre are started on boot (and therefore don't need manual a start), while
we all know that sqlite is not a service and doesn't need that either.
Fix issue #1992
Fix issue #1994
Add seed values support for Query Builder order_by

(feature request #1987)
Merge pull request #1949 from compwright/develop

Added support for timestamp-based migrations
Clean-up following PR #1949
Merge pull request #1258 from cryode/feature/robot_mobile

Add mobile detection to robot user agents.
[ci skip] Add changelog entry for PR #1258
Fix some DB_cache-related issues

http://codeigniter.com/forums/viewthread/229610/
Fix PostgreSQL WHERE with boolean values
[ci skip] Cosmetic changes to the 'News section' tutorial
Better debugging for DB Cache path