Shariff-Plus 1.0.7

• Open telegram in a popup (see heiseonline@1555a72).
• Add option data-facebooklike-css (#14).
• Add rel="nofollow" to all sharing buttons' links (#15, see also heiseonline#283 for heiseonline/shariff).

This version 1.0.7 of Shariff-Plus is equal to Shariff 2.1.2 plus the facebooklike service.