Importer corrections

[georgeDaskalakis]

Pluging in the importer updates to MoBi

[abdelr]

@georgeDaskalakis There are conflicting files. I suggest we merge develop into the local branch first so we can locally solve the conflicts.

[georgeDaskalakis]

@georgeDaskalakis There are conflicting files. I suggest we merge develop into the local branch first so we can locally solve the conflicts.

@abdelr you are right. I have merged the develop into the branch.

[msevestre]

Reference to core corrupted

[msevestre]

I am still unsure about this molweight stuff. If this is done in Core, then this can be removed.
If not, then this needs to be renamed :)