0.2_rc1 fixes
1. download pack is creating extra folders /var/grails/.../etc.. [done]
	> fixed: using File.separator
	> also updated the config.groovy to user "File.separator"

2. Candidate: listing photoset, if there is no title, there is no link
to go open the photoset. [check]
	> remove the RENDER PDF  link [done]
	> "candidate" column to be sortable. check default sorting. [done]

3. Agency: 
	> list should be sorted by name by default. [done]
	> make the column headers sortable [done]

4. Client to only see their own Productions [done]
	> block at production level
	> block/filter at listing level
	> portfolio should also be blocked
	> casting role and categories should be blocked