Refactoring, new modules, tests

[srensamblador]

Changes

• Removed unneeded external libraries (chess).
• Separated POD-handler into two modoules, session handles login/logut and session tracking, it's basically a wrapper for solid-auth-client, and ldflex-queries will handle queries either over a WebID or the authenticated user.
• Friend module renamed to Person, it's useful to represent the user itself as well
• Made tests for ldflex-queries. TODO getFriends() test and Person class test
• Fixed some minor UI bugs

Notes

• For now on we should avoid copypasting entire external files into the project and polluting it with unneeded dependencies. Instead if we see a function we might find useful, explore how to adapt it to our project domain and add it wherever it belongs. If we find a useful file we could use as a library make sure it will be as isolated as possible and won't require us to cascade dependencies like core.js did
• We should do Pull Requests whenever we want to merge a feature branch into develop, unless it's either a documentation branch or a very minor change. Pull requests from develop into master should always be reviewed.

Opinions?

[srensamblador]

It looks great, just a question. After creating the POD reader (uses ldflex). May we insert it into the ldflex-queries class? or should be better in another one.

Good question. This is case would be a module using another one. POD reader doesnt belong inside LDFlex queries but it's a library on its own so to speak. Therefore, it should be its own module in its own file that imports (requires) LDFlex.

[srensamblador]

Sorry about the core.js mess, i didn't realize it would be such a hassle. It's great that we now have cleaner modules, let's keep it this way from now on.

It's not a big deal, it's just better to start clean before it gets out of hand