[FEAT/FIX] Add Other-method helpers and fix coefficient display precision

[DOCS/FIX] First draft of Objective No. 5: TO FACILITATE MAINTENANCE AND UPDATES FOR CG STAFF. (No more hard-coded settings, libraries updated, instructions added to the README)

[FEAT] Objective 6 - Finalising the interface: change the look and feel of the tool to bring it into line with the CRRA design

[FEAT] Objective 2: Custom resource batches with supplementary LP semantics

[FEAT] Objective 3: Export graph data individually and in full + Added data on the amount of resources consumed and remaining

[FEAT] objective 2: More flexible resources input

[FEAT] Objective 2: Modifying the graphical user interface to add custom resources + Test CSS

[FEAT] Goal 1 almost achieved: two types of limits possible(percentage / absolute value), start of unit conversion, adapted export templates and a bug fix in the ‘Coefficients’ tab (some resources not displayed)

[FIX] Terminal warnings: "DataFrame.applymap has been deprecated" and "`label` got an empty value." + Bug: Value change not applied on the second change (slider coefficient in tab 3 and numeric value in tab 1)

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