CA config, renaming tabs

[darrenburns]

• Adds support for specifying custom CA bundles (3 new configuration items inside ssl config section)
• Adds "focus shifts" - configurable automatic focus shifting in focus config section:
  • focus.on_startup to choose which widget gets focused on app launch.
  • focus.on_response to auto-shift focus on receiving a response.
• Fixes jump mode issue when initiated while an input field was focused.
• Renames Metadata tab to Info
• Renames Parameters tab to Query