More history css changes. Removing css variable… this is not Sass.
Merge branch 'dashboard' of https://github.com/zanata/zanata-server into dashboard

# By Patrick Huang (3) and Alex Eng (2)
# Via Alex Eng (3) and Carlos Munoz (1)
* 'dashboard' of https://github.com/zanata/zanata-server:
  refactor code based on review comments
  refactor code based on review comments
  rename methods and add javadoc
  fix functional cargo deployment after file storage changelog change
  fix ConcurrentModificationException triggered by jsf