In an effort to tackle #18437 this removes 2 of the jQuery UI plugins. Highlight & autocomplete, both used once in our code. Highlight was just removed easily, autocomplete was replaced with GL dropdown

update CHANGELOG

add auto-completion into pipeline

add auto-completion into pipeline

add auto-completion into pipeline

update changelog

modify tests

remove empty lines

add auto-completion into pipeline

update changelog

modify tests

switch text_field_tag into text_field

add test to new field

switch context into describe

Update CHANGELOG

render only commit title

update CHANGELOG

add auto-completion into pipeline

add auto-completion into pipeline

add auto-completion into pipeline

update changelog

modify tests

remove empty lines

add auto-completion into pipeline

update changelog

modify tests

update changelog

Update CHANGELOG

add indetation

add tests to pipeline ref

change file name for tests

change file name for spec tests

remove empty line

rename test it

rename test name

removing unexpected changes

removing unexpected changes2

update changelog

This reverts commit 3e991230.

# Conflicts:
#	app/models/project.rb

With new navigation design it makes no sense to duplicate title in the
header

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