Merge pull request #702 from pshivana/master

#694 Fix a failing rspec spec in pipeline whitelist PR
Log additional information when failing to clean a directory.

Refer to #360 for further information.
Merge pull request #704 from gajwani/more-cleanup-information

Log additional information when failing to clean a directory.
Add migration for comments in pipelines table.

Signed-off-by: Matthew Boedicker <mboedicker@pivotal.io>
Add getComment() method to PipelineInstanceModel.

Signed-off-by: Matthew Boedicker <mboedicker@pivotal.io>
Add updateComment() method to PipelineSqlMapDao.

Signed-off-by: Matthew Boedicker <mboedicker@pivotal.io>
Added updateComment method to PipelineHistoryService.

Signed-off-by: Matthew Boedicker <mboedicker@pivotal.io>
Add setComment method to PipelineInstanceModel.

Signed-off-by: Matthew Boedicker <mboedicker@pivotal.io>
Add build comment to pipeline history JSON.

Signed-off-by: Matthew Boedicker <mboedicker@pivotal.io>
Add update_comment action to pipeline controller.

Signed-off-by: Matthew Boedicker <mboedicker@pivotal.io>
Invalidate goCache when updating pipeline history comments.

Signed-off-by: Matthew Boedicker <mboedicker@pivotal.io>
First pass at pipeline build comment javascript.

Signed-off-by: Frank Kotsianas <fkotsianas@pivotal.io>
Fix whitespace.

Signed-off-by: Frank Kotsianas <fkotsianas@pivotal.io>
Markup, CSS and controller for pipeline build comments.

Signed-off-by: Frank Kotsianas <fkotsianas@pivotal.io>
Add HTML escaping modifier for comment input form.

Signed-off-by: Frank Kotsianas <fkotsianas@pivotal.io>
Check authorization when updating pipeline comment.

Signed-off-by: Matthew Boedicker <mboedicker@pivotal.io>
Make pipeline comment submit button blue.
Set pipeline comment button text to Edit Comment when there is already a comment.
Line up pipeline comments with bars.
Style pipeline comment button like other buttons.