update for redmine 2.2

reschedule_after function was renamed into reschedule_on!

Signed-off-by: Bart vdr. Meulen <bartvdrmeulen@gmail.com>
Addtion fix for aa62a9141c185

Keep the line heights in line between the two divs
remove additional white spacing below the chart

Signed-off-by: Bart vdr. Meulen <bartvdrmeulen@gmail.com>
correct rails 3 callback disabling and reenabling
исправления
Merge branch 'redmine_2.2'

Conflicts:
	.rvmrc
	Gemfile
	lib/redmine_better_gantt_chart/active_record/callback_extensions_for_rails3.rb
	lib/redmine_better_gantt_chart/issue_dependency_patch.rb