Add note about libjpeg for PIL
adding movie link
Formatting link correctly
Removing extra forward slash from link
Fix typo and broken links.

Problem noticed while reviewing Petr's PR.
Merge pull request #203 from hflynn/9993-fix-develop

9993 fix develop
Merge pull request #205 from jburel/rebased/develop/script-doc

Fix typo and broken links. (rebased onto develop)
Fix title headings styles
Add paragraph about sessions commands
Fix code blocks
Split content of CLI documentation between sysadmins and developers
Create users command line interface documentation

- Rename command-line interface documentation files
- Modify |OmeroCLI| global substitution
Convert glossary into definition list
Add documentation for user/group CLI functionalities

- Fix heading in sysadmins documentation
Add paragraph about group copy
Improve users CLI documentation readability (add workflow section)

Systematically use the :command: role for CLI commands
Define :omero_cmd: role and apply it to the CLI documentation pages

Turn bash highlighting off
Expand the server configuration section of the CLI documentation

- Fix link to developers CLI page
- Fix location of user profiles
Standardize spelling & abbreviation of the Command Line Interface

- Add global substitution for Command Line Interface abbreviation
- Remove global substitution for CLI doc pages
Use command markup in developers CLI page