Release v8.8.0

• [minor] fixes for pos_profile in make-demo (#10289)
• [fix] encode title and description in payment request (#10240)
• [Minor] Country field name should be country
• minor fix in applying pricing rule
• [UI Test] UI test added for Pricing Rule (#10237)
• [UI Test] Test added for Shipping Rule (#10229)
• [UI Test ] Sales Order with tax and discount (#10225)
• [ui test] student applicant and various actions that can be taken (#10221)
• Make payment entry button in expense claim and some minor cleanup
• Update utils.py
• Update manuals. Fix codacy issues
• Add Payment Entry for Expenses
• [UI Tests] All sales order test in tests folders (#10211)
• Minor fixing in setting cumulative tax amount
• Update taxes_and_totals.js
• [URGENT] this is me
• Rounding issue in tax calculation (#10135)
• [docs] cleanup
• [UI Test] Sales Order with multi currency and tax (#10189)
• [docs] remove {{docs_base_url}}
• [docs] add headings
• Add erpnext-grey.png, add logo in footer (#10101)
• resolved merge conflicts on develop (#10185)
• [ui test] Setting up school course+program and their dependencies (#10142)
• [ui-testing] added test for production order (#10138)
• [fix] Default Warehouse not obeying form value (#10153)
• [ui test] leave application in HR (#10151)
• [UI Test] Test for Product Bundle added (#10158)
• Portal breadcrumbs (#10095)
• [test] test_sales_order.py
• [fix] test
• [fix] test
• [minor] change docs_base_url
• User Permissions Redesign (#10006)
• Add disable check for Activity Type (#10120)
• Docs in website (#10149)
• [ui test] leave type,leave control panel and leave allocation in HR (#10136)
• [fixes] errors caught on flake8 (#10126)
• [fix] flake8 verison
• UI test cases and documentation
• [enhance] Provision to set default mode of payment for the POS in POS profile
• [ui test] Minor files (#10133)
• [ui test]sales and taxes charges template (#10116)
• [ui test] employee attendance tool and attendance in HR (#10112)
• auto populate all rows (#10090)
• Employee Loan Should Be Limited To Employee Company (#10039) (#10093)
• add transaction date call to get_exchange_rate (#10109)
• old style exception, raise --> new style for Python 3 (#10082)
• [UI Test] Create tax account in Charts of account (#10105)
• Remove inline styling, add css classes (#10077)
• [fix] company graph based on base currency (#9950)
• [minor][wiz] fix company image alignment (#10114)