Extend Joomla's Gantry Particle "content pro"

extend the Gantry 5 content pro (joomla) particle to automatically fetch all articles from a set of categories and display them as a grid UI backend extension of the particle configuration: - configurable title (none, article title, SEF menu title) {as multiselect box} - description (none, metadescription, article intro text, first words of article) {as select box} - limit description (words, chars) {input field number only} - ordering (random, order by article order) {as select box} - image (none, manual entry, article intro image, full article image) {as select box} - read more link (no link, article SEF url, article link A, article link b, article link c) {as select box} - read more link text (joomla default text, article link A text, article link b text, article link c text) {as select box} - read more button (no button, article SEF url, article link A, article link b, article link c) {as select box} - read more link text (joomla default text, article link A text, article link b text, article link c text) {as select box} UI frontend extension: - the above configured parameters have to be used on rendering the frontend pages, which use the new particle. - means all articles of the selected category set have to be fetched and used as items for the generation of the html delivery: - you commit to our gitlab repository (we share it to you on award of project) Milestone payments: MS0: 0% - on starting a installable package of the original content pro particle for commiting into git MS1 10%: - delivery of the UI into repo with working packaging for joomla MS2 45%: - delivery of the full functionality to be able to use the plugin including all configurations MS3 25%: - bugfixing finished MS4 20%: - our internal test are finished (about 3-4 weeks) MS5 20% - if delivery of MS1-MS3 in 3 days