created a member session that save the member uniq and member type and then updated hire_form controller to check if the member session is not nil and the member type is equal to pc and to check if user session is not nil if it is in author mode. need to add this check to the other parts of the panel like the different emails and the panel index.
updated workers controller so that only authors or PCs can access the panel. Need to add error pages/messages and upate the other pages in the workers controller.
added check for valid_user to the edit method in the workers controller
added the valid user check to the remaining pages and moved the valid_user method to the application controller so it could be accessed across controllers
Merge pull request #126 from StanfordHCI/dr-panelpw

Dr panelpw
Merge branch 'master' into at-handoffDelay