[UX] British spelling: rename optimization → optimisation throughout code (conflict resolve)

[FIX/UX] Style comparison loader button and update ui_text.xlsx content (text displayed in the app, which can be edited directly in this file)

[UX] address user feedback: per-year template text and column header, more visible "Add resource" button, fixed next-tab navigation on all pages, updated method constraints intro text

[FIX] welcome: update intro text for target audience, style 'Let's get started...' with gradient, add page bottom padding globally

[FEAT/FIX] tab1: add load/download standard resources buttons, fix stale costs on edit/delete/reset, increase number precision

[STYLE] styles.css: add top margin on activate/deactivate-all buttons

[FIX] Padding alert

[FIX] Style of the ‘Cancel’ button in reset mode

[DOC] Readme updated with instructions on adding data and updating libraries

[FIX] Try fixing the position of the sidebar

[FIX] Try fixing the position of the sidebar

[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)

[FIX] Geologic storage fixed coeff + template improvements + UI fixes

[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 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)