Format multiple lines doesn't always respect selection

[huguesv]

It's easiest to see this issue if you have 4 lines or more of unformatted code, and select the 2 middle lines by clicking in the margin like this:

Note that line 14 and 15 are selected and the caret is at the start of line 16.

Edit->Advanced->Format Selection

Result is that both lines that were selected are formatted, in addition to the following line, which shouldn't have been formatted.

For comparison, use "Edit->Advanced->Make Uppercase", which correctly only applies formatting to the 2 selected lines.

While it's correct behavior to format the line that the caret is on when there is no selected range, it should not be done when there is a selected range.

[huguesv]

Same for the Comment Selection and Uncomment Selection commands.

[MikhailArkhipov]

Because margin click actually places end of selected at the next line.