TRUNK-2312: nav menu expand
TRUNK-2312: Fixing the left edge overlapping of the OpenMRS text logo
[TRUNK-4331] Creating CONTRIBUTING.md file
TRUNK-4331: Additional edits to CONTRIBUTING.md

Further edits based on feedback from Burke and "Using Git" wiki page.
Merge pull request #655 from madawa-rc/TRUNK-2312

TRUNK-2312: Navigation Menu Expand Vertically
Merge pull request #814 from downeym/master

[TRUNK-4331] Creating CONTRIBUTING.md file
TRUNK 4281: translate hard coded messages for cohorts
Merge pull request #828 from ehsdev/master

TRUNK 4281: translate hard coded messages for cohorts
TRUNK-4166: added another unit test and @should annotation in BaseAttributeTypeValidator

TRUNK-4166: edited unit test and annotation in order to meet unit test convention
TRUNK-3779 User secret answer should be required if the question is set
Merge pull request #838 from lbat/TRUNK-4166

TRUNK-4166: added another unit test and @should annotation in BaseAttrib...
Merge pull request #836 from ShubhamRai/TRUNK-3779

TRUNK-3779 User secret answer should be required if the question is set