Update login.tpl

Making the login.tpl get the stylesheets depending of the current used theme.
Put all Media Browser code together in one place (it's not that much^^) and clean up some mess
Re-introduce modx.view.js but without the browser code
Re-organize the code in modx.browser.js a bit
Add same context menu items to browser view as in tree + rename functionality
Also refresh tree when a file is deleted
Add edit file functionality to browser view context menu
Add quick update file functionality to browser view context menu
Add download functionality to browser view context menu
Add new method getResizedImage() to modfilemediasource.class.php to create thumbnails
Make q-tip (hover on img in filetree) image resized and not full size
Better syncing between browser view and tree on select, remove
Sync selected file/node between browser view and tree
Prevent expanded folders from collapsing when clicked on (to load) in media browser
Improved syncing between browser tree and browser view, added config option to hide tooltip
Fix image full view window bugs and add a hover effect as suggested in #11811
Add filepath bottom bar
Make all 3 media browser variants (panel, window, rte/popup) display and act consistent
Fix close button bug (not closing...) in RTE popup window
Fix UI of RTE media browser window