Disable custom status and tab lines

- Trying out vim-airline
Never show the tabline
Don't reset statusline for quickfix buffers
Fix pattern for qfFugitivePrefix
Change cchar for qfFugitivePrefix
Add personal library of helper functions
Add airline customisation
Add ctrlp customisation
Customise titlestring
Update plugin: syntastic
Update plugin: javascript
Add plugin: targets
Add plugin: argumentative
Add plugin: vdebug (again)