added support for DBLP

It is now possible to parse DBLP entrys,
also there is a Version check implementet in the app.
Made some improvements to how the authornames get remodelt for searching.
Added support for Sciencedirect.
Added support for CiteSeerX
Added Google Scholar.

Added support for Google Scholar. It is now also possible to compare one or more Results and merge them into one final BibtexFile.
Made improvements to the shown result. it is now easier to use.