Fixed link alignment

See merge request gitlab-org/gitlab-ce!25162

(cherry picked from commit e865ee2b)

9189f14f Fixed link alignment
bf1a7910 Fixed static analysis issue
c0db4c7e Replaced class on caret
b96f9011 Replaced flex with vertical-align-middle
665c1b96 Added mr-2 class back
91b97ae6 Fixed visual issue when MR has conflicts