Minor refactoring, add specs, changes arguments to use keywords.

Closes https://github.com/gitlabhq/gitlabhq/issues/9283

Closes #1151

Make the following changes to deal with new behavior in Rails 4.1.2:

* Use nested resources to avoid slashes in arguments to path helpers.

Signed-off-by: NDmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

* check for outdated discussions by comparing diff
* improve discussion UI
Signed-off-by: NDmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Signed-off-by: NDmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Signed-off-by: NDmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Signed-off-by: NDmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Signed-off-by: NDmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Signed-off-by: NDmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Clean up admin dashboad tooltips

Clean up admin dashboad tooltips

Clean up admin dashboad tooltips

Add helper method

change to use app helper

Modify tooltips to use new helper

Convert remaining times

Adjust one tooltip

-removed extranious space from new_merge_request_email.text.erb

Change-Id: I65314b3fe8f8442b4c30d311b96fbceddf240f42

-Disable observers post test run
-Allow db:seed_fu RAILS_ENV=test to be run more than once without error
-fix diffs_in_between, was passing in the default_options for grit, but grit in this case doesn't take options, fixed the test to actually fail if the incorrect diffs are returned
-make notes/commits render against proper project
-MR discussion file links should reference note's project
-Added tests for commit links on edit merge request
-fixes edit issues (canceling an edited mr, updating an edited mr)
-updates tests with checks for source code updates
-still forked_merge_requests.feature (project_forked_merge_requests) test not passing (commented out -- "stable" not being set)

MR API: error on bad target_project

-If the target project id is specified and it is not the same as the project the request is being made on (the source), and the it isn't a fork of that project, error out, otherwise use it as the target
-Fixes some busted (but hidden) test cases

Conflicts:
	app/views/merge_requests/show/_diffs.html.haml
	spec/features/notes_on_merge_requests_spec.rb

Change-Id: I20e595c156d0e8a63048baaead7be6330c738a05