Revisiting the plugins.

There are some of the plugins, which I never use in my workflow, so that
I've removing them. Other than that, narrow down filetype specific
plugins to the right file types.

Also removed js specific plugins, and rely only on those provided by
vim.

vimrc

@@ -11,15 +11,14 @@ endif
 
 call plug#begin('~/.vim/bundle')
 
-Plug 'Valloric/MatchTagAlways'
+Plug 'Valloric/MatchTagAlways', { 'for': ['html', 'xml'] }
 Plug 'ayuanx/vim-mark-standalone'
 Plug 'davidhalter/jedi-vim', { 'for': 'python' }
-Plug 'dogrover/vim-pentadactyl'
 if has("patch-8.0.1453")
     Plug 'fatih/vim-go', { 'do': ':GoInstallBinaries' }
 endif
 Plug 'dense-analysis/ale'
-Plug 'fs111/pydoc.vim', { 'for': 'python' }
+Plug 'fs111/pydoc.vim', { 'for': 'python' } " adds Pydoc command and K under cursor
 Plug 'gryf/dragvisuals'
 Plug 'gryf/pep8-vim', { 'for': 'python' }
 Plug 'gryf/pylint-vim', { 'for': 'python' }
@@ -27,32 +26,26 @@ Plug 'gryf/python-syntax', { 'for': 'python' }
 Plug 'gryf/python.vim', { 'for': 'python' }
 Plug 'gryf/pythonhelper', { 'for': 'python' }
 Plug 'gryf/snipmate.vim'
-Plug 'gryf/vim-latex-compiler'
+Plug 'gryf/vim-latex-compiler', { 'for': 'tex' }
 Plug 'gryf/wombat256grf'
-Plug 'gryf/zoom.vim'
+Plug 'gryf/zoom.vim'  " control gui font size with '+' or '-; keys. 
 Plug 'habamax/vim-rst', { 'for': 'rst' }
 Plug 'honza/vim-snippets'
-Plug 'kazuyukitanimura/jsbeautify'
 Plug 'kien/ctrlp.vim'
-Plug 'mattn/calendar-vim'
 Plug 'mikeage/occur.vim'
 Plug 'mileszs/ack.vim'
-Plug 'myhere/vim-nodejs-complete', { 'for': 'javascript' }
 Plug 'othree/html5.vim', { 'for': 'html' }
-Plug 'pangloss/vim-javascript', { 'for': 'javascript' }
-Plug 'pcaro90/jpythonfold.vim'
+Plug 'pcaro90/jpythonfold.vim', { 'for': 'python' }
 Plug 'preservim/nerdcommenter'
 Plug 'preservim/tagbar'
 Plug 'regedarek/ZoomWin'
 Plug 'rust-lang/rust.vim', { 'for': 'rust' }
 Plug 'sjl/gundo.vim'
-Plug 'skammer/vim-css-color'
-Plug 'terryma/vim-multiple-cursors'
+Plug 'skammer/vim-css-color', { 'for': 'css' }
 Plug 'tpope/vim-fugitive'
 Plug 'tpope/vim-repeat'
 Plug 'tpope/vim-surround'
 Plug 'vim-scripts/DrawIt'
-Plug 'vim-scripts/JavaScript-Indent', { 'for': 'javascript' }
 Plug 'vim-scripts/LanguageTool'
 Plug 'vim-scripts/ShowMarks'
 Plug 'vim-scripts/indentpython', { 'for': 'python' }