bump version to 3.0.3
Fixed typo which causes wiki pages to fail to load
fixes reposman input parsing
Use variables to set highlight button background
Replace search field magnifier icon
Replace collapsible icon by icon-font
Make timeline toolbar icons icon-fonts
Specs for default work package status destroy
Translations for default work package status destroy error message
Fix default work package status destroy
we don't need no disc for li's in wiki tocs

fixes (parts of): https://www.openproject.org/work_packages/7384
Merge pull request #1310 from opf/release/fix/7689_blue_icons_in_telekom_theme

[Release][Fix] 7689 blue icons in telekom theme
Fix design for PEs wihout start or end date
Merge pull request #1312 from opf/release/fix/7384_headlines_in_wiki_toc

[Release][Fix] 7384 headlines in wiki toc
Merge pull request #1311 from opf/release/fix/7499_no_default_wp_status

[Release][Fix] 7499 no default wp status
Merge pull request #1308 from opf/release/fix/7623_replace_remaining_icons_by_icon_font

[Release 3.0][Fix] 7623 replace remaining icons by icon font
Merge pull request #1313 from opf/release/fix/7493_wp_with_only_start_date_display

[Release][Fix] 7493 wp with only start date display
Add expand icons
Add specs for Redmine::UnifiedDiff
Add styles for repository diff