UI Alert Fix:
* Added .alert to main.less, bottom affixing the alerts
Merge pull request #133 from ralphschindler/hotfix/ui-flash-message-positioning

UI Alert Fix - making alerts bottom affixed.

Also fixes alert color for "error" messages, and makes them fixed until the user
acts.

Conflicts:
	asset/dist/zf-apigility-admin/css/apigility.css
	asset/dist/zf-apigility-admin/js/app.js
	asset/src/zf-apigility-admin/css/main.css
	asset/src/zf-apigility-admin/less/main.less
Merge branch 'hotfix/133'

Close #133