Merge branch 'develop' of github.com:tracim/tracim_lib into develop

src/component/PopinFixed/PopinFixed.styl

       color white
     &__title
       margin-right 15px
+      border-radius 5px
       color white
       text-overflow ellipsis
       overflow hidden
       white-space nowrap
+      & > input
+        padding-left 5px
     &__edittitle
       margin 0 15px
       border 1px solid transparent

src/component/Timeline/Timeline.styl

 .timeline
   display flex
   flex-direction column
-  margin 10px
+  margin 10px 10px 10px 5px
   border-radius 10px
-  height 100%
+  height calc(100% - 10px) // 10px => margin
   &__header
     flex 0 1 auto
     border-radius 10px 10px 0 0
       width 100%
       background-color lightGrey
       &__btn
-        padding 5px 25px
+        display flex
+        justify-content center
+        padding 5px 20px
         border-radius 5px
         width 145px
         color white