Improved user profile display

• Fixed fetchUser incorrectly calling addNewUsers with an object instead of an array
• Made addNewUsers also store local instance users in usersObject by screen_name in addition to id - this is needed for links like /users/username to work
• Since MR turned out to be much smaller than I anticipated I've also added small thing - now it displays placeholder until user profile is loaded
  

Closes #82 (closed)

changed the description

added 133 commits

• 42bb3482...8e4777cc - 132 commits from branch develop
• fa7c3c20 - Merge remote-tracking branch 'upstream/develop' into fix_empty_profiles

Compare with previous version

merged

mentioned in commit c824d253