REV: let openshift use minified js by grunt

export NODE_ENV=production
REV: remove useless information
Merge pull request #32 from xiaods/master

enhance some feature.
Add global search functionality
Changes from feedback

Fix jshint errors (+4 squashed commits)
Squashed commits:
[0da0d6d] Revert board and card back to original styles
[de28cd8] Clear the results and show a message if the user has not entered a search query
[d2e5c69] Move full results button to bottom right corner
[aa67646] Display the total number of search results (informs user that only partial results are being displayed)