Not-so-important feature requests for autocomplete and more

[PHPirates]

Will be kept updated.

• [ ] Autocomplete for \{ \}, so when you type \{ the \} gets inserted just like with \[ \]
• [ ] Autocomplete for \left( \right) and other brackets {,[, such that when you type \left( the \right) gets inserted. For me this is much faster than when I have to select \left( from the autocomplete list. (can be implemented with smart enter?)
• [x] Insert braces for second required parameters and skip groups with tab
• [ ] Tab to skip over \right) ? Not sure about this, tab should maybe not be abused too much.
• [x] The inserting of brackets after typing a_12 does not always work. Currently it hinders me more than it's useful
• [x] The error message 'document does not contain document environment' is in like 99% of the cases a false error message. 'document contains syntax error' would make more sense.
• [ ] When a $ closes an inline math environment it should not insert a second $. Can happen when you removed a second $ of inline math and then insert it again.
• [x] I think because of the autocomplete for commands like \mu, typing \mu^2 does not work, it produces \mu^ demonstration typing \mu^2
• [ ] Highlight all four brackets for commands with two required parameters instead of only two (now it only happens if your cursor is between the middle ones)
• [x] (#1077) When typing $ and then removing it by hitting backspace, the second $ should also be removed.
• [ ] (#939) Changing a label name should lead to the references also being updated.
• [x] Typing \" should not insert a second " since it's used for typesetting an umlaut
• [x] (#879) I define new environments with \newtheorem from the thmtools package, they could be added to the autocomplete as well, just as \newenvironment is now.
• [ ] When source files are in folders, the empty folders appear in out/ (edit: apparently this is a bug in pdflatex? https://tex.stackexchange.com/a/206986/98850)
• [x] (#704) Label quickfix/intention should use latex convention of dashes instead of camelCase
• [x] (#748) creating file from big section creates it top-level instead of on same level as including file
• [x] (#734) creating file from big section still uses capitals, it should not
• [x] (#836) intention create align* from display math
• [x] intention on \input to create file if it doesn't exist
• [ ] Make all links clickable, not just in comments
• [x] Menu option to delete all generated files instead of only aux files

[HannahSchellekens]

Please move to a Pull Request :)

[PHPirates]

I know, but I'm not sure how much I will contribute so it'd make more sense if the branch is not on my fork but here :) (and it makes sense to start a PR once there is a relevant commit)

[PHPirates]

Moved remaining items to project board next to other items