Added line-height:normal for some basic elements and changed form label size to match user style

Hi @hrvojegolcic ,

Hope I've done this right. Please have a look and let me know. I am still trying to get my bearings with this block as we haven't implemented this in our institution yet ( because of the same bootstrap incompatibility) and hence thought it will be nice to be of some help and learn the block's working in the process.

Have a good weekend. 
Regards,
Hittesh Ahuja