CLC-3591: Update foundation to 5.2.2
https://jira.ets.berkeley.edu/jira/browse/CLC-3591

**Note** - We can wait with the merge until we cut the QA branch for 38
CLC-3600: Update placeholder gem to 3.0.2
https://jira.ets.berkeley.edu/jira/browse/CLC-3600
CLC-2709 Update Spork for Rails 4
The "require" line breaks Spork & is redundant thanks to the Rails.root.join require below.
Merge pull request #2374 from raydavis/raywip

CLC-2709 Update Spork for Rails 4
Merge pull request #2372 from christianv/CLC-3591

CLC-3591: Update foundation to 5.2.2
Merge pull request #2373 from christianv/CLC-3600

CLC-3600: Update placeholder gem to 3.0.2
[CLC-3584] Textbooks List: Should we display the same message in textbooks list page and course info page when textbook information is not available?
Bumping version number to next release
Merge pull request #2375 from haroonrasheed333/CLC-3584

[CLC-3584] Textbooks List: Should we display the same message in textbooks list page and course info page when textbook information is not available?
Merge pull request #2379 from raydavis/versionbump

Bumping version number to next release