Update vimrc

- Add nice/sweater color scheme
- Switch default color scheme to kalisi dark
- Set mappings to nmap where it makes sense
- Add mapping for ':YcmCompleter Goto'
- Multiline long lines
- Remove finished TODOs
Add vim after scripts for clighter and vim-cycle (zef)
Update ycm_extra_conf.py

Change standart to c++11.