Fixes issues with Browse Repository from * commands

- Uses html-loader partials (removes ejs)
 - Updates select styling

Renamed to Gutter Changes
Provides local changes if any, or recent commit changes
Distinguishes between added, changed, and removed lines
Shows a hover for the full diff hunk
Shows diff even with unsaved changes

Fixes age threshold schema

Increases default avatar size in hovers from 16 to 32px

Reworks timed out prs in line annotations

Adds title context to stash push git command

Helps avoid source map conflicts with other extensions

Changes heatmap colorization for better clarity
Changes blame avatars to be w/ the annotations rather than in the gutter