Generate level 2+ group pages, close #1897
Migrate remaining enums, close #1887
Merge pull request #1899 from excilys/migrate-enums

Misc: Migrate remaining enums
turn ClassSimpleNameToString.toString into a lazy val
No need for Color to be sealed
Fix recorder routing logic, close #1900
minor clean up
Filtering conditional headers in recorder
Fix build
Added configuration key to leave/remove conditional cache headers
Added checkbox in recorder to configure removing conditional cache headers
Merge pull request #1902 from excilys/conditional-cache

Conditional cache. Resolves #1890
minor clean up
Bring build triggering back to life
Prevent stat with lower bound of 0 from causing histogram exception
Merge branch 'master' of https://github.com/excilys/gatling

# By Ivan Mushketyk (3) and others
# Via Pierre DAL-PRA (1) and Stephane Landelle (1)
* 'master' of https://github.com/excilys/gatling:
  Bring build triggering back to life
  minor clean up
  Added checkbox in recorder to configure removing conditional cache headers
  Added configuration key to leave/remove conditional cache headers
  Filtering conditional headers in recorder
Upgrade HdrHistogram 1.2.1, close #1904
Merge pull request #1903 from kahliburke/master

Reports: Fixes exception thrown from Histogram when stat comes in with lower bound of 0
Support embedded resource urls starting with //, close #1893
globalRequestCounters should be a val