[Feature] Support drag and drop on IPFS and Geth path inputs

[42piratas]

From @davidak on February 6, 2017 4:28

I have IPFS already installed, so i tried to select it's directory, which is the default ~/.ipfs.

Finder don't lists hidden directorys and i wasn't able to drag and drop it or type the path in.

https://youtu.be/S6gYJ1-s2Yk

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AKASHA Version 0.4.0
OS X 10.10.5

Copied from original issue: AKASHAorg/Alpha#62

[42piratas]

From @davidak on February 6, 2017 4:39

Workaround: Display hidden directories in Finder and drag and drop it onto the file selection dialog.

The program should test if the default location is available and use it.

[42piratas]

From @bmann on February 12, 2017 4:52

I had IPFS installed but wanted to have a fresh install. Creating a new directory not starting with a "." and selecting it worked fine.

I agree, it should detect an existing .ipfs directory in the default location of "~/.ipfs" and just work.