2018 01 17 tara perm roles

[ridz1208]

@tara I made this PR just to point you towards my branch of changes implemented on top of yours. This branch was rebased on top of 19.0 since soon 19.0 will be pushed to bugfix,minor and major so this is taking some advance on it. (to see clear changes do a git compare with aces/19.0-dev)

non-roles-related changes

• rebased it on 19.0-dev
• created 2 new functions in the DB to avoid some duplications (https://github.com/aces/Loris/pull/3428)

roles-related changes:

• created a roles class and a permissions class
• cleaned up the patch moved stuff around in the script alot
• added more restrictive rules to the arguments passed from the command line
• extracted as much as possible SQL code from the script and moved it into the Role and permission classes
• commented several sections of the code
• similar changes in the ajax
• modified SQL to follow latest conventions

changes are not yet done....

Compare to 19.0 https://github.com/aces/Loris/compare/19.0-dev...ridz1208:2018_01_17_tara_perm_roles?expand=1