Remove SuperTab and clang_complete

Change-Id: I24ac92725fede4306d9a032beb17b7c8a46e30a9
Add YouCompleteMe with UltiSnips integration

Change-Id: I5e50871e7e0868cd9b371475e9e2c8feb0b2bcec
Make sure that YCM can work nicelly with UltiSnipts even if we start vim with a file to edit

Change-Id: Ib15c43ff026dfe1c12f2447e8237d6ec657aa015
Tweak some settings to better fit current workflow

Change-Id: I87b361c6d3a31366debc878a7adb3482197f4eeb
Update submodules

Change-Id: I8c1508b9e566319df7ec1e34b12a71b53c814c89
Added more configuration and cleaned trailing whitespace

Change-Id: I0569d0515da2543583d7451f811625783e5e8c3f
Added EasyMotion and Abolish plugins

Change-Id: I3a42121463b5843e869aa4aba4e61ba01b0bc99f