Allow to stop adding blank line for indent block.

[pinkfrog9]

Given the follow code,

Since the second block is indented, there is no need to add a blank line before it even if the "add blank line for tag" is enabled for "block" tag.

I cannot simply remove "block" from the "add blank line for tag" list. Since the following case is desired.

[christopherpickering]

Hey man, I can't reproduce this. Please follow the template and include your config.