Add upload functionality directly to package manager grid

(cherry picked from commit 0a2901fdadb298f7b9d29f2d9dc81e141fc4461f)
remove commented-out line for ocd

(cherry picked from commit 309a64fe9a39417e8867aa7a5e7c5bf12deb7751)
Add new processor to allow custom core_path location

(cherry picked from commit 22e8e288fc67e46e622800bfa853a274785bde58)
Restrict upload to zip only, and switch to new processor

(cherry picked from commit 231f2fb4fd198d313e7db2d6d2f9f36ed294ccbf)
Disable autoupload to let users upload more than one package
Add upload functionality directly to package manager grid

* pkg-upload:
  Disable autoupload to let users upload more than one package
  Restrict upload to zip only, and switch to new processor
  Add new processor to allow custom core_path location
  remove commented-out line for ocd
  Add upload functionality directly to package manager grid