Implement build functions

• Remove yaourt dependency by implementing intern functions for building packages from AUR with deps resolution.
• Packager mail clickable
• Other fixes

v4.2.0

• added pkg.tar.gz format support
• remove no more need search_aur_button
• fix #194
• update translations

v4.1.8

• Fix installation of AUR split-packages (#192)
• Fix wrong tooltip text in preferences dialog (#196)
• Make left sidebar resizable/expandable
• Update copyright to year 2017
• Update translations

v4.1.7

• Add multiple words search within AUR (#183)
• Fix freeze, when quick scrolling on refresh period setting
• Add vala 0.36 support
• Update translations

v4.1.6

• added timeout to let the time to the daemon to correctly quit after auto refresh
• added a feature to "transfer" the filter text to the search box, when it is selected
• added package description in a tooltip, if window size truncates it
• added option to copy name package from overlap "details" or from descriptions
• improved transaction cancellation
• use pkgbase name for yaourt to avoid multiple builds
• translations updated

v4.1.5

• remove no more needed dep for some binaries
• improve custom sort function for search results
• add a dedicated install_pamac-tray-appindicator rule in Makefile
• add a different name for appindicator tray in desktop file
• update translations

v4.1.4

• enable left click action in tray icon when using KDE
• move appindicator support to an optional binary pamac-tray-appindicator
• update translations

v4.1.3

• be polite and wait for mhwd-live script (FS#14)
• add clearer strings for pacache options
• simplify intern transaction handling
• if db is locked, wait for pacman if running else remove the lock
• remove no more needed security
• permit systemd to log paccache output
• add a systemd timer unit to monthly generate mirrorlist
• remove no more needed file
• use appindicator for tray icon if in KDE
• change to a shorter label for the update notification button
• update translations

v4.1.2

• Add https mirror support (#112)
• Some display fixes and improve generate mirror list
• Really use new mirrorlist when refresh after generate it
• Fix #155
• Do not hide infobox if there are important infos
• Do not show details for unknown error
• Make columns sortable in updater (#152)
• Sort search result by relevance (#68 and #134)
• Add clean cache feature in preferences (as paccache frontend)
• Add a systemd timer to monthly clean cache (paccache -r)
• Update translation

v4.1.1

• some display fixes in preferences dialog
• fix hooks progression display
• fix download size calculation (#141)
• fix window size with long description text (#145)
• fix back arrow button after update (#143)