Count all-time stats without where clause

[cesswairimu]

Following up ##5490 and #8652
The instance variables here

plots2/app/controllers/stats_controller.rb

Lines 28 to 47 in fc11ad2

	@notes = Node.published.select(%i(created type))
	.where(type: 'note', created: @start.to_i..@end.to_i)
	.size
	@wikis = Revision.published.select(:timestamp)
	.where(timestamp: @start.to_i..@end.to_i)
	.size - @notes # because notes each have one revision
	@people = User.where(created_at: @start..@end).where(status: 1)
	.size
	@comments = Comment.select(:status, :timestamp)
	.where(status: 1, timestamp: @start.to_i..@end.to_i)
	.size
	@contributors = User.contributor_count_for(@start, @end)
	@popular_tags = Tag.nodes_frequency(@start, @end)
	total_questions = Node.published.questions
	.where(created: @start.to_i..@end.to_i)
	@answers = total_questions.joins(:comments).size.size
	@questions = total_questions.size.size
	end
	end

I think this query would be a much faster to do .size on these when the filter is 'all time' stats instead of using the where range clause (where timestamp btn 2010..NOW().

The range currently is

plots2/app/controllers/stats_controller.rb

Lines 49 to 52 in fc11ad2

	def all_time_stats
	params[:start] = Date.new(2014, 01, 01).to_time
	params[:end] = Time.now
	end

This is the option http://stable.publiclab.org/stats?options=For+all+time