Documentation issues - 0.1.6

[pavish]

Install from scratch:

• Git repo link uses centerofci link instead of mathesar-foundation

  git clone https://github.com/centerofci/mathesar.git .

• mv static_files /mathesar/static/mathesar should be mv static_files ./mathesar/static/mathesar
• Remove static_files.zip once extracted
• User database creation is no longer relevant and should be removed: CREATE DATABASE your_db_name OWNER mathesar;

Upgrades:

• 0.1.6 upgrade instructions are not present in the docs.
  • (I tested the setup based on previous upgrade instructions)

Upgrade from scratch:

• Upgrade to 0.1.5 > Section: For installations done from scratch > Link used for text are the same as for 0.1.4 points to a location that's not found
• Step: Pull the latest version from the repository should pull latest tag
• Step: Update Python dependencies should install from requirements-prod.txt

[Anish9901]

mv static_files /mathesar/static/mathesar should be mv static_files ./mathesar/static/mathesar

This was fixed in #3503

Upgrade to 0.1.5 > Section: For installations done from scratch > Link used for text are the same as for 0.1.4 points to a location that's not found

This was fixed in #3478

[seancolsen]

Done in #3507