vimrc: add tag navigation shortcuts
vimrc: add tag navigation shortcuts

xmementoit/vim-ide,sirbijan/vim-ide,xmementoit/vim-ide,xmementoit/vim-ide,xmementoit/vim-ide,sirbijan/vim-ide,sirbijan/vim-ide,xmementoit/vim-ide,sirbijan/vim-ide,xmementoit/vim-ide,xmementoit/vim-ide,sirbijan/vim-ide,sirbijan/vim-ide,sirbijan/vim-ide,sirbijan/vim-ide,sirbijan/vim-ide,xmementoit/vim-ide,xmementoit/vim-ide,sirbijan/vim-ide,xmementoit/vim-ide