Turn 2-factor authentication into 2 steps process. Disabled 2fa UI for ldap users since it is not supported

The instance variables assigned in `set_filter_values` are not used by
anything anymore.

Closes internal https://dev.gitlab.org/gitlab/gitlabhq/issues/2269

Signed-off-by: Jeroen van Baarsen <jeroenvanbaarsen@gmail.com>

Fix bug where error messages from Dropzone would not be displayed on the issues page

Closes #1258

Closes #1249

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.

signe-in -> signed-in
go_to_gihub_for_permissions -> go_to_github_for_permissions
descendand -> descendant
behavour -> behaviour
recepient_email -> recipient_email
generate_fingerpint -> generate_fingerprint
dependes -> depends
Cant't -> Can't
wisit -> visit
notifcation -> notification
sufficent_scope -> sufficient_scope?
levet -> level

This was default before but now it fixed with providing assignee_id
parameter making url shareble and dont reset when other filters users.

Also this commit removes old methods that are not used any more.
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

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

* use filter_params variable when set filter values
* fix project issues spinach tests
Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

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

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

Also memoize the method to ensure that other methods in
ApplicationController that rely on it can call it efficiently.

in app controller, user model and services.

with existing method_missing. Pattern already used extensively,
so let's be consistent and use it everywhere.

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

This reverts commit 5aaa3565, reversing
changes made to 5b8c1767.