Add ability to reduce space between gurmukhi and translations

[sukhpalsingh]

Currently, the space between gurmukhi and translations is distributes equally to fill the whole screen. When the Presenter View is off, some of the translation comes under the Current Shabad window and make it hard to read.

It will be nice if it is possible to remove the gaps by settings.

The gaps are currently removed when next line is enabled from the settings but when next line is disabled, the gaps are visible.

[prebhdevsingh]

@sukhpalsingh what about an option to top align everything with minimal line spacing between gurmukhi and translations? Gurmukhi in some panktees can take more space and others so we may still have the problem of the text not fitting properly.