Need help or fix.

Hi.
Some problems occur and I need fix or solution.

1. When I put an image into text there is a space after it. In the HTML is used “alignnone” but when I change for “inlineimg” everything is fine, the problem is that I don’t want to edit HTML text in the editor every time I insert a picture in the text. I was using a different theme before, everything was fine. An example in attachment.

2. It’s happening often that new post does not display properly on the home page. An example in attachment.

3. Is any way that I can have login button like in the example? An example in attachment.

4. Can you add a share button to the posts? Is there an option to activate something like that in the theme options? Not a plugin. An example in attachment.

Thx.