Merge pull request #19 from tunnelshade/master

OWTF 0.16 "shady citizen": Merging pull request from @tunnelshade - Install script added for restricted dictionaries
OWTF 0.16 "shady citizen" - Minor improvements to pull request from tunnelshade
OWTF 0.16 "shady citizen": More minor improvements to dictionary installation/merging scripts