Replace deprecated functions
Remove redundant local variables
Remove some redundant closing tags
Fix calls to preg_split in googleauth module
Simplify JS if statements and remove unecessary return statements
Remove redundant CSS units
Simplify CSS properties
Remove unnecessary .gitignore entries and files

... add add one I forgot to add a long time ago
Correct some spelling mistakes
Remove unused private functions
Remove redundant notification manager classes
Remove empty files
Correct typo in dashboard model in validation module
Remove redundant or empty index controllers and actions
Remove empty functions in subclasses that override empty functions
Tweak logging priorities to improve production performance
Tweak translator loading to improve performance when translation is not required
Remove strange example module test from validation module