Merges options.env with process.env

Programatically expands search/compare results for better experience
 - Adding collapsed &  then expanding provides better feedback (spinner)

Prettiers html

Adds search commits button to view

Updates README (wip)
Updates welcome & settings pages (wip)

Adds ability to start a compare directly from the view

Renames showCommitInResults to showCommitInView
Renames showFileHistoryInResults to showFileHistoryInView

Normalizes ctor parameters for ViewNodes

Adds Change Base (branch/tag) command to line history view

Adds @command decorator
Changes (fetch|pull|push)All to be cancelable

Renames path import to paths for less naming conflicts

Config when's can be resolved before extension activation

Adds push with force command to repo nodes