Medium: UI fixes in the Chat View

[hagitmer]

• Link text colors should be different depending on whether the link was send by self or another. Links within messages from another member should be #0080D6 (blue). Links within messages the user has sent should match the non-hyperlinked text (white). Ref Image: https://www.dropbox.com/s/d0q7s1bwrnnvamm/WH-32.png?dl=0

• The join message is missing spaces after commas between names, within the content area

• Send button behavior & style is inconsistent with spec. Behavior should be persistent and just be enabled / disabled based on whether there’s text in the field. Remove the paper airplane icon. Send Button should be #0080D6 in color when enabled. Send Button should be #C8C8C8 in color when disabled. Ref Image: https://www.dropbox.com/s/ef9277s4viec3m8/WH-10.png?dl=0

• Use the asset in the spec for the Forward (>) icon. Ref Image: https://www.dropbox.com/s/rccm6xk89a822vy/WH-20.png?dl=0

• When opening a view with a lot of messages, from Push, the blue New Message line indicator is aligned to the middle of the page, not the top under the Navigation Bar

• the Left/Right padding of the message content is off. Padding on all elements that are aligned on the left side should be 16px from the left screen edge. Padding on all elements that are aligned on the right side should be 16px from the right screen edge. Ref Image: https://www.dropbox.com/s/in5srdogxztq8bd/WH-03.png?dl=0

• The padding between clusters of messages from the same sender is too big. Should be 4px padding between message clusters from the same sender. Ref Image: https://www.dropbox.com/s/gr5fnjb87ctgeeo/WH-04.png?dl=0

• Spacing between different senders is inconsistent. Should be 24px padding between messages from different senders. Ref Image: https://www.dropbox.com/s/e8tbspxjkavmcu7/WH-05.png?dl=0

• User join & group rename text has padding above & below that is inconsistent & too large. Should be 24px padding above & below user join & group rename text. Ref Image: https://www.dropbox.com/s/0z5sz967wjzj4nl/WH-09.png?dl=0

• Error state not consistent with Spec. Ref Image: https://www.dropbox.com/s/9av8zrqz9q050qb/WH-33.png?dl=0

• New Messages indicator font style should be SF UI font, 13pt size, Semibold weight. Ref Image: https://www.dropbox.com/s/koul97myt6afkos/WH-34.png?dl=0

• General stream timestamp (within the message stream) text style is inconsistent. Text weight of the day part (Oct 23 / Monday / Yesterday / Today) should be Bold. Text color should be #A6B4BF. Remove the comma after the date, because date will already be bolded to visually separate it. https://www.dropbox.com/s/fmre9rp3pwdh8tg/WH-12.png?dl=0

• Spacing under message sent by self is smaller than spacing under message sent by others. Possible to match them? Ref Image: https://www.dropbox.com/s/e4wjatdzd6z9rj5/WH-41.png?dl=0