Open with support about bookworm

[babluboy]

Completed open-with-support by adding a contractor to Files. The following behavior is done:
1- Select multiple epub files, right click and "Open in Bookworm" - the epubs which are not in the library are added to the library
2- Double click and epub (or select one epub and Open in Bookworm) - the epub is added to bookworm and the reading mode is opened for that epub. If the epub is already in the library then the last opened page of the book is shown

[babluboy]

@choyan Will be great if you can test this feature

[choyan]

@babluboy everything is working great.
The about page is not showing properly from the very beginning. Please check that out.

[babluboy]

@choyan yes, I have also noticed the about dialog showing as a ghost in my VM where I just install from PPA...however it shows up fine on my laptop where I build from source...do you install from PPA or build from source?
I will open another issue to track this